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product structure silicon monolithic integrated circuit this product has no designed protection against radioactive ra ys 1/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. tsz22111 ? 14 ? 001 www.rohm.com 16.dec.2015 rev.001 sound processor with built- in 3-band equalizer bd 3 7532 fv general description BD37532FV is a sound processor with built-in 3-band equalizer for car audio. a stereo input selector is available that functions to switch single end input and ground isolation input, input-gain control, main volume, loudness, 5ch fader volume and lpf for subwoofer . moreover, advanced switch circuit, which is an original rohm technology, can reduce various switching noise (ex. no-signal, low frequency like 20hz & large signal inputs). also, advanced switch makes control of microcomputer easier, and constructs a high quality car audio system. features ? reduced switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness by using advanced switch circuit ? built-in differential input selector that can make various combination of single-ended / differential input. ? built-in ground isolation amplifier inputs, which is ideal for external stereo input. ? built-in input gain controller reduces volume switching noise for portable audio input. ? decreased number of external components due to built -in 3-band equalizer filter, lpf for subwoofer and loudness filter. it is possible to freely control q, gv, fo of 3-band equalizer and fc of lpf, gv of loudness by i 2 c bus control. ? a gain adjustment quantity of 20db with a 1 db step gain adjustment is possible for bass, middle and treble. ? equipped with terminals for subwoofer outputs. also, the audio signal outputs of the front, rear and subwoofer can be chosen using the i 2 c bus control. ? energy-saving design resulting in low current consumption is achieved utilizing the bicmos process. it has the advantage in quality over scaling down the power heat control of the internal regulators. ? input pins and output pins are organized and separately laid out in such a way that it simplifies the pattern layout of the pcb and decreases the board dimensions. ? it is possible to control i 2 c bus with 3.3v / 5v. applications it is optimal for car audio systems. it can also be us ed for audio equipments like mini compo, micro compo, tv etc. key specifications ? power supply voltage range: 7.0v to 9.5v ? circuit current (no signal): 38ma(typ) ? total harmonic distortion 1: (front,rear) 0.001%(typ) ? total harmonic distortion 2: (subwoofer) 0.002%(typ) ? maximum input voltage: 2.3vrms(typ) ? crosstalk between selectors: -100db(typ) ? volume control range: +15db to -79db ? output noise voltage 1: (front,rear) 3.8vrms(typ) ? output noise voltage 2: (subwoofer) 4.8vrms(typ) ? residual output noise voltage: 1.8vrms(typ) ? operating temperature range: -40c to +85c package w(typ) x d(typ) x h(max) ssop-b28 10.0mm x 7.60mm x 1.35 mm datashee t datashee t downloaded from: http:///
bd 3 7532 fv 2/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical application circuit pin configuration pin descriptions pin no. pin name description pin no. pin name description 1 a1 a input terminal of 1ch 15 mute external compulsory mute terminal 2 a2 a input terminal of 2ch 16 test2 test pin 3 b1 b input terminal of 1ch 17 test3 test pin 4 b2 b input terminal of 2ch 18 outs2 subwoofer output terminal of 2ch 5 c1 c input terminal of 1ch 19 outs1 subwoofer output terminal of 1ch 6 c2 c input terminal of 2ch 20 outr2 rear output terminal of 2ch 7 dp1 d positive input terminal of 1ch 21 outr1 rear output terminal of 1ch 8 dn d negative input terminal 22 outf2 front output terminal of 2ch 9 dp2 d positive input terminal of 2ch 23 outf1 front output terminal of 1ch 10 ep1 e positive input terminal of 1ch 24 vcc power supply terminal 11 en1 e negative input terminal of 1ch 25 scl i 2 c communication clock terminal 12 en2 e negative input terminal of 2ch 26 sda i 2 c communication data terminal 13 ep2 e positive input terminal of 2ch 27 gnd gnd terminal 14 test1 test pin 28 fil vcc/2 terminal top view dp2 9 ep1 10 a1 1 b1 3 b2 4 c1 5 c2 6 dp1 7 a2 2 dn 8 en1 11 ep2 13 test1 14 en2 12 28 fil 27 gnd 26 sda 25 sc l 24 v cc 23 outf1 22 out f2 21 out r1 20 outr2 19 out s1 18 outs2 17 test3 16 test2 15 mute BD37532FV downloaded from: http:///
bd 3 7532 fv 3/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 block diagram gnd vcc/2 28 27 26 25 24 23 22 21 20 19 18 17 16 15 volume/mute 3 band p- eq (tone control) loudness fader fader fader fader fader lpf input gain gnd iso amp input selector ( 3 single-end and 2 stereo iso) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 100 k 100 k 100 k 100 k 100 k 100 k 250 k gnd iso amp 250 k 250 k gnd iso amp 250 k 250 k gnd iso amp 250 k 250 k vcc i 2 c bus logic fader gain :+ 15 db - 79 b/1db step n o p o p n o i se lpf fc = 55 / 85 / 120 / 160 hz loudness gain: 20 db 0 b/1 b step n o p o p n o i se ? 0= 250 / 400 / 800 hz ? hicut1/2/3/4 3 band p-eq (tone control) gain + 20 db - 20 db /1db step n o p o p n o i se ? bass f0= 60 / 80 / 100 / 120 hz q =0.5/1.0/1.5/2.0 ? meddle:f0= 500 /1k/1.5k/2.5khz q =0. 75 /1/1. 25 /1.5 ? treble f0=7.5k/ 10 k/ 12 .5k/ 15 khz q =0. 75 /1. 25 volume gain + 15 db - 79 db /1db step n o p o p n o i se input gain gain + 20 db 0 db /1db step n o p o p n o i se fader gain:+15db to -79db/1db step loudness gain:+20db to 0db/1db step gain: +20db to -20db/1db step gain: +15db to -79db/1db step gain: +20db to 0db/1db step downloaded from: http:///
bd 3 7532 fv 4/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 absolute maximum ratings (ta=25 c ) (note 1) when mounted on rohm standard board(70x70x1.6 (mm 3 ), derate by 8.5mw/c for ta=25c or more. thermal resistance ja = 117.6(c/w) material : a fr4 grass epoxy board(3% or less of copper foil area) caution: operating the ic over the absolute maximum ratings may damage t he ic. the damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. therefore, it is important to consider circuit protection measures, such as adding a fuse, in ca se the ic is operated ov er the absolute maximum ratings. recommended operating conditions parameter symbol limit unit power supply voltage v cc 7.0 to 9.5 v temperature topr -40 to +85 c electrical characteristics (unless otherwise noted, ta=25 c , v cc =8.5v, f=1khz, v in =1vrms, rg=600, r l =10k, a1 input, input gain 0db, mute off, volume 0db, tone control 0db, loudness 0db, lpf off, fader 0db) block parameter symbol limit unit conditions min typ max general circuit current i q 38 48 ma no signal voltage gain g v -1.5 0 +1.5 db g v =20log(v out /v in ) channel balance cb -1.5 0 +1.5 db cb = g v1 -g v2 total harmonic distortion 1 (front,rear) thd+n1 0.001 0.05 v out =1vrms bw=400hz-30khz total harmonic distortion 2 (subwoofer) thd+n2 0.002 0.05 v out =1vrms bw=400hz-30khz output noise voltage 1 (front,rear) * v no1 3.8 15 vrms rg = 0 bw = ihf-a output noise voltage 2 (subwoofer) * v no2 4.8 15 vrms rg = 0 bw = ihf-a residual output noise voltage * v nor 1.8 10 vrms fader = - db rg = 0 bw = ihf-a crosstalk between channels* ctc - 100 - 90 db rg = 0 ctc= 20log (v out /v in ) bw = ihf-a ripple rejection rr - 70 - 40 db f=1khz v rr =100mvrms rr=20log(v cc in/v out ) input selector input impedance (a, b, c) r in_s 70 100 130 k input impedance (d, e) r in_d 175 250 325 k maximum input voltage v im 2.1 2.3 vrms v im at thd+n(v out )=1 bw=400hz-30khz crosstalk between selectors * cts - 100 - 90 db rg = 0 cts=20log(v out /v in ) bw = ihf-a common mode rejection ratio * (d, e) cmrr 50 65 db xp1 and xn input xp2 and xn input cmrr=20log(v in /v out ) bw = ihf-a,[*x d,e] parameter symbol rating unit power supply voltage v cc 10.0 v input voltage v in v cc +0.3 to gnd-0.3 v power dissipation pd 1.06 (note 1) w storage temperature tstg -55 to +150 c downloaded from: http:///
bd 3 7532 fv 5/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 electrical characteristics C continued block parameter symbol limit u nit conditions min typ max input gain minimum input gain g in _min -2 0 +2 db input gain 0db v in =100mvrms g in =20log(v out /v in ) maximum input gain g in _max +18 +20 +22 db input gain +20db v in =100mvrms g in =20log(v out /v in ) gain set error g in _err -2 0 +2 db gain=+20db to +1db mute mute attenuation * g mute - 105 - 85 db mute on g mute =20log(v out /v in ) bw = ihf-a volume maximum gain g v_max 13 15 17 db volume = 15db v in =100mvrms gv=20log(v out /v in ) maximum attenuation * g v_min - 100 - 85 db volume = - db gv= 20log (v out /v in ) bw = ihf-a attenuation set error 1 g v_err1 -2 0 +2 db gain & att=+15db to -15db attenuation set error 2 g v_err2 -3 0 +3 db att=-16db to -47db attenuation set error 3 g v_err3 -4 0 +4 db att=-48db to -79db bass maximum boost gain g b_ bst 18 20 22 db gain=+20db f=100hz v in =100mvrms gb=20log (v out /v in ) maximum cut gain g b_ cut - 22 - 20 - 18 db gain=-20db f=100hz v in =2vrms gb=20log (v out /v in ) gain set error g b_err -2 0 +2 db gain=+20db to -20db f=100hz middle maximum boost gain g m_bst 18 20 22 db gain=+20db f=1khz v in =100mvrms gm=20log (v o ut /v in ) maximum cut gain g m_ cut - 22 - 20 - 18 db gain=-20db f=1khz v in =2vrms gm=20log (v out /v in ) gain set error g m_err -2 0 +2 db gain=+20db to -20db f=1khz treble maximum boost gain g t_ bst 18 20 22 db gain=+20db f=10khz v in =100mvrms gt=20log (v out /v in ) maximum cut gain g t_ cut -22 - 20 -18 db gain=-20db f=10khz v in =2vrms gt=20log (v out /v in ) gain set error g t_err -2 0 +2 db gain=+20db to -20db f=10khz fader / subwoofer maximum boost gain g f_ bst 13 15 17 db fader=15db v in =100mvrms g f =20log(v out /v in ) maximum attenuation * g f_min - 100 - 90 db fader = - db gf=20log(v out /v in ) bw = ihf-a gain set error g f_err -2 0 +2 db gain=+15db to +1db attenuation set error 1 g f_err1 -2 0 +2 db att=-1db to - 15db attenuation set error 2 g f_err2 -3 0 +3 db att=- 16d b to -47db attenuation set error 3 g f_err3 -4 0 +4 db att=-48db to -79db output impedance r out 50 v in =100mvrms maximum output voltage v om 2 2.2 vrms thd+n=1 bw=400hz-30khz loudness maximum gain g l_max 17 20 23 db gain 20db v in =100mvrms gl=20log(v out /v in ) gain set error g l_err -2 0 +2 db gain=+20db to +1db vp -9690a (average value detection, effective value display) filter by mat sushita communication is used for * measurement. phase between input / output is same. downloaded from: http:///
bd 3 7532 fv 6/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical performance curv es -5 -4 -3 -2 -1 0 1 2 3 4 5 10 100 1k 10k 100k frequency (hz) gain (db) figure 3 . gain v s frequency power supply voltage : v cc [ v] -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain[db] bass gain : - 20db to +20db /1db step fo : 60hz q : 0.5 figure 4 . bass gain vs frequency figure 1. circuit current (no signal) vs power supply voltage 0 10 20 30 40 50 0 2 4 6 8 10 vcc[v] iq[ma] power supply voltage : v cc [v] circuit current (no signal) : i q [ma] 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 vout (v) thd+n (% 0.001 0.01 0.1 1 10 vout thd+n [%] output voltage : v ou t [vrms] v in [vrms] 10khz 1khz 100hz figure 2. total harmonic distortion vs output voltage gain=0db downloaded from: http:///
bd 3 7532 fv 7/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical performance curves C continued -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k q : 0.5/1/1.5/2 bass gain : 20db fo : 60hz frequency [hz] gain [db] figure 6 . bass q vs frequency fo : 500hz q : 0.75 -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain[db] middle gain : 20db fo : 500hz q : 0.75/1/1.25/1.5 -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [h z] gain [db] middle gain : - 20db to +20db /1db step figure 7 . middle gain vs frequency fo : 500hz q : 0.75 -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain [db] fo : 60/80/100/120hz bass gain : 20db q : 0.5 figure 5 . bass fo vs frequency -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain [db] fo : 500/1k/1.5k/2.5khz figure 8 . middle fo vs frequency downloaded from: http:///
bd 3 7532 fv 8/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical performance curves C continued -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain [db] middle gain : 20db fo : 500hz q : 0.75/1/1.25/1.5 figure 9 . middle q vs frequency -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency (hz) gain (db) gain [db] frequency [hz] treble gain:- 20 db to +20db /1db step fo : 7.5khz q : 0.75 figure 10 . treble gain vs frequency -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k gain [db] fo : 7.5k/10k/12.5k/15khz treble gain : 20db q : 0.75 frequency [hz] figure 11 . treble fo vs frequency -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency (hz) gain (db) gain[db] q : 0.75/1.25 treble gain : 20db fo : 7.5khz frequency [hz] figure 12 . treble q vs frequency downloaded from: http:///
bd 3 7532 fv 9/ 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical performance curves C continued 1 10 100 1000 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 volume gain[db] j?R[uvm] din-audio ihf-a figure 13. output noise vs volume gain output noise [vrms] volume gain [db] 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 bass gain [db] j?R [uvm] din-audio ihf-a figure 14 . output noise vs bass gain output noise [vrms] bass gain [db] 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 middle gain [db] j?R [uvm] din-audio ihf-a figure 15 . output noise vs middle gain output noise [vrms] middle gain [db] 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 treble gain [db] j?R [uvm] din-audio ihf-a figure 16 . output noise vs treble gain output noise [vrms] treble gain [db] downloaded from: http:///
bd 3 7532 fv 10 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 typical performance curves C continued figure 20 . advanced switch 2 figure 19 . advanced switch 1 figure 17 . cmrr vs frequency -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k frequency (hz) gain (db gain [db] frequency [hz] 0.0 0.5 1.0 1.5 2.0 2.5 100 1000 10000 100000 ?[ohm] [vm] r load [ohm] output voltage : v out [vrms] figure 18. output voltage vs r load downloaded from: http:///
bd 3 7532 fv 11 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 timing chart control signal specification (1) electrical specifications and timing for bus lines and i/o stag es figure 21. definition of timing on the i 2 c-bus table 1 characteristics of the sda and scl bus lines for i 2 c- bu s devices (unless specified particularly, ta=25 c , v cc =8.5v) parameter symbol fast-mode i 2 c-bus unit min max 1 scl clock frequency f scl 0 400 khz 2 bus free time between a stop and start condition t buf 1.3 s 3 hold time (repeated) start condition. after this period, the fi rst clock pulse is generated t hd;sta 0.6 s 4 low period of the scl clock t low 1.3 s 5 high period of the scl clock t high 0.6 s 6 set-up time for a repeated start condition t su;sta 0.6 s 7 data hold time: t hd;dat 0.06 (note) s 8 data set-up time t su;dat 120 ns 9 set-up time for stop condition t su;sto 0.6 s all values referred to vih min and vil max levels (see table 2). (note) the device must internally provide a hold time of at least 30 0 ns for the sda signal (referred to the vih min of the scl signal ) in order to bridge the undefined region of the falling edge of scl. about 7 (t hd;dat ), 8(t su;dat ), make the setup in which the margin is fully in . table 2 characteristics of the sda and scl i/o stages for i 2 c-bus devices parameter symbol fast-mode devices unit min max 10 low level input voltage: v il -0.3 +1 v 11 high level input voltage: v ih 2.3 5 v 12 pulse width of spikes which must be suppressed by the input fil ter. t sp 0 50 ns 13 low level output voltage: at 3ma sink current v ol1 0 0.4 v 14 input current each i/o pin with an input voltage between 0.4v and 4.5v. i i - 10 + 10 a sda s scl t low t r t hd;dat p t hd;sta t high t buf t f t su;dat t su;stat t su;stot t sp t hd;stat sr p figure 22. a command timing example in the i 2 c data transmission buf 4 us hd ;sta 2 us hd ;dat 1 us low 3 us high 1 us su ;dat 1 us su ;sto 2 us scl clock frequency 250 khz scl sda t su;sto 2s t hd;dat :1 s t su;dat :1s t hd;sta :2s t high :1s t low :3s t buf :4s scl sda scl clock frequency : 250khz downloaded from: http:///
bd 3 7532 fv 12 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 (2) i 2 c bus format msb lsb msb lsb msb lsb s slave address a select address a data a p 1bi t 8bit 1bit 8bit 1bit 8bit 1bit 1bit s = start conditions (recognition of start bit) slave address = recognition of slave address. 7 bits in upper ord er are voluntary. the least significant bit is l for write mode. a = acknowledge bit (recognition of acknowledgement) select address = select address for volume, bass and treble. data = data on every volume and tone. p = stop condition (recognition of stop bit) (3) i 2 c bus interface protocol (a) basic form s slave address a select address a data a p msb lsb msb lsb msb lsb (b) automatic increment (select address increases (+1) according to th e number of data. s slave address a select address a data1 a data2 a ???? datan a p msb lsb msb lsb msb lsb msb lsb msb lsb (example) data1 shall be set as data of address specified by select address. data2 shall be set as data of address specified by select address + 1. datan shall be set as data of address specified by select address + n- 1. (c) configuration unavailable for transmission (in this case, on ly select address1 is set. s slave address a select address1 a data a select address 2 a data a p msb lsb msb lsb msb lsb msb lsb msb lsb (note ) if any data is transmitted as select address 2 next to data, it is re cognized as data, not as select address 2. (4) slave address msb lsb a6 a5 a4 a3 a2 a1 a0 r/w 1 0 0 0 0 0 0 0 80h downloaded from: http:///
bd 3 7532 fv 13 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 (5) select address & data items select address (hex) msb data lsb d7 d6 d5 d4 d3 d2 d1 d0 initial setup 1 01 advanced switch on/off 0 advanced switch time of input gain/volume tone/fader/loudness 0 1 advanced switch time of mute initial setup 2 02 lpf phase 0 subwoofer output select 0 subwoofer lpf fc initial setup 3 03 0 0 0 loudness fo 0 0 1 input selector 05 full-diff type 0 0 input selector input gain 06 mute on/off 0 0 input gain volume gain 20 volume gain / attenuation fader 1ch front 28 fader gain / attenuation fader 2ch front 29 fader gain / attenuation fader 1ch rear 2a fader gain / attenuation fader 2ch rear 2b fader gain / attenuation fader subwoofer 2c fader gain / attenuation test mode 30 1 1 1 1 1 1 1 1 bass setup 41 0 0 bass fo 0 0 bass q middle setup 44 0 0 middle fo 0 0 middle q treble setup 47 0 0 treble fo 0 0 0 treble q bass gain 51 bass boost/ cut 0 0 bass gain middle gain 54 middle boost/ cut 0 0 middle gain treble gain 57 treble boost/ cut 0 0 treble gain loudness gain 75 0 loudness hicut loudness gain system reset fe 1 0 0 0 0 0 0 1 advanced switch note 1. the advanced switch works in the latch part while changing from on e function to another.. 2. upon continuous data transfer, the select address rolls ove r because of the automatic increment function, as shown below. 3. advanced switch is not used for the functions of input sele ctor and subwoofer output select etc. please turn on mute when changing the settings of this side of the set . 4. when using mute function of this ic at the time of changi ng input selector, please switch mute on/off while waiting for advanced-mute time. 01 02 03 05 06 20 28 29 2a 2b 2c 30 41 44 47 51 54 57 75 downloaded from: http:///
bd 3 7532 fv 14 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 select address 01 (hex) time msb advanced switch time of mute lsb d7 d6 d5 d4 d3 d2 d1 d0 0.6msec advanced switch on/off 0 advanced switch time of input gain/volume tone/fader/loudness 0 1 0 0 1.0msec 0 1 1.4msec 1 0 3.2msec 1 1 time msb advanced switch time of input gain/volume/tone/fader/loudness lsb d7 d6 d5 d4 d3 d2 d1 d0 4.7 msec advanced switch on/off 0 0 0 0 1 advanced switch time of mute 7.1 msec 0 1 11.2 msec 1 0 14.4 msec 1 1 mode msb advanced switch on/off lsb d7 d6 d5 d4 d3 d2 d1 d0 off 0 0 advanced switch time of input gain/volume tone/fader/loudness 0 1 advanced switch time of mute on 1 select address 02(hex) fc msb subwoofer lpf fc lsb d7 d6 d5 d4 d3 d2 d1 d0 off lpf phase 0 subwoofer output select 0 0 0 0 55hz 0 0 1 85hz 0 1 0 120hz 0 1 1 160hz 1 0 0 prohibition other setting mode msb subwoofer output select lsb d7 d6 d5 d4 d3 d2 d1 d0 lpf lpf phase 0 0 0 0 subwoofer lpf fc fr ont 0 1 rear 1 0 prohibition 1 1 phase msb lpf phase lsb d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 subwoofer output select 0 subwoofer lpf fc 180 1 select address 03(hex) f0 msb loudness fo lsb d7 d6 d5 d4 d3 d2 d1 d0 250hz 0 0 0 0 0 0 0 1 400hz 0 1 800hz 1 0 prohibition 1 1 : initial condition downloaded from: http:///
bd 3 7532 fv 15 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 s elec t address 05(hex) mode msb input selector lsb outf1 outf2 d7 d6 d5 d4 d3 d2 d1 d0 a a1 a2 full-diff bias type select 0 0 0 0 0 0 0 b b1 b2 0 0 0 0 1 c c1 c2 0 0 0 1 0 d single dp1 dp2 0 0 0 1 1 e1 single ep1 en1 0 1 0 1 0 e2 single en2 ep2 0 1 0 1 1 a diff a1 b1 0 1 1 1 1 c diff b2 c2 1 0 0 0 0 d diff dp1 dp2 0 0 1 1 0 e full diff ep1 ep2 0 1 0 0 0 input short 0 1 0 0 1 prohibition other setting input short : the input impedance of each input term inal is lowered from 100k(typ) to 6 k(typ). (for quick charge of coupling capacitor) mode msb full-diff bias type select ls b d7 d6 d5 d4 d3 d2 d1 d0 negative input 0 0 0 input selector bias 1 : initial condition negative input type for ground C isolation type) bias type for differential amplifier type 1ch differential 10 ep1 11 en1 12 en2 13 ep2 2ch differential 1ch differential 2ch differential 10 ep1 11 en1 12 en2 13 ep2 1ch signal input 2ch signal input 1ch signal input 2ch signal input downloaded from: http:///
bd 3 7532 fv 16 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 select address 06 (hex) gain msb input gain lsb d7 d6 d5 d4 d3 d2 d1 d0 0db mute on/off 0 0 0 0 0 0 0 1db 0 0 0 0 1 2db 0 0 0 1 0 3db 0 0 0 1 1 4db 0 0 1 0 0 5db 0 0 1 0 1 6db 0 0 1 1 0 7db 0 0 1 1 1 8db 0 1 0 0 0 9db 0 1 0 0 1 10db 0 1 0 1 0 11db 0 1 0 1 1 12db 0 1 1 0 0 13db 0 1 1 0 1 14db 0 1 1 1 0 15db 0 1 1 1 1 16db 1 0 0 0 0 17db 1 0 0 0 1 18db 1 0 0 1 0 19db 1 0 0 1 1 20db 1 0 1 0 0 prohibition 1 1 0 1 1 1 1 1 1 1 mode msb mute on/off lsb d7 d6 d5 d4 d3 d2 d1 d0 off 0 0 0 input gain on 1 : initial condition downloaded from: http:///
bd 3 7532 fv 17 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 select address 20, 28, 29, 2a, 2b, 2c (hex) gain & att msb vol, fader gain / attenuation lsb d7 d6 d5 d4 d3 d2 d1 d0 prohibition 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 15db 0 1 1 1 0 0 0 1 14db 0 1 1 1 0 0 1 0 13db 0 1 1 1 0 0 1 1 - 77db 1 1 0 0 1 1 0 1 - 78db 1 1 0 0 1 1 1 0 - 79db 1 1 0 0 1 1 1 1 prohibition 1 1 0 1 0 0 0 0 1 1 1 1 1 1 1 0 - db 1 1 1 1 1 1 1 1 select address 41(hex) q factor msb bass q factor lsb d7 d6 d5 d4 d3 d2 d1 d0 0.5 0 0 bass fo 0 0 0 0 1.0 0 1 1.5 1 0 2.0 1 1 fo msb bass fo lsb d7 d6 d5 d4 d3 d2 d1 d0 60hz 0 0 0 0 0 0 bass q factor 80hz 0 1 100hz 1 0 120hz 1 1 select address 44(hex) q factor msb middle q factor lsb d7 d6 d5 d4 d3 d2 d1 d0 0.75 0 0 middle fo 0 0 0 0 1.0 0 1 1.25 1 0 1.5 1 1 fo msb middle fo lsb d7 d6 d5 d4 d3 d2 d1 d0 500hz 0 0 0 0 0 0 middle q factor 1khz 0 1 1.5khz 1 0 2.5khz 1 1 : initial condition downloaded from: http:///
bd 3 7532 fv 18 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 select address 47 (hex) q factor msb treble q factor lsb d7 d6 d5 d4 d3 d2 d1 d0 0.75 0 0 treble fo 0 0 0 0 1.25 1 fo msb treble fo lsb d7 d6 d5 d4 d3 d2 d1 d0 7.5khz 0 0 0 0 0 0 0 treble q factor 10khz 0 1 12.5khz 1 0 15khz 1 1 se lect address 51, 54, 57 (hex) gain msb bass/middle/treble gain lsb d7 d6 d5 d4 d3 d2 d1 d0 0db bass/ middle/ treble boost /cut 0 0 0 0 0 0 0 1db 0 0 0 0 1 2db 0 0 0 1 0 3db 0 0 0 1 1 4db 0 0 1 0 0 5db 0 0 1 0 1 6db 0 0 1 1 0 7db 0 0 1 1 1 8db 0 1 0 0 0 9db 0 1 0 0 1 10db 0 1 0 1 0 11db 0 1 0 1 1 12db 0 1 1 0 0 13db 0 1 1 0 1 14db 0 1 1 1 0 15db 0 1 1 1 1 16db 1 0 0 0 0 17db 1 0 0 0 1 18db 1 0 0 1 0 19db 1 0 0 1 1 20db 1 0 1 0 0 prohibition 1 0 1 0 1 1 1 1 1 0 1 1 1 1 1 mode msb bass/middle/treble boost/cut lsb d7 d6 d5 d4 d3 d2 d1 d0 boost 0 0 0 bass/middle/treble gain cut 1 : initial condition downloaded from: http:///
bd 3 7532 fv 19 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 select address 75 (hex) mode msb loudness hicut lsb d7 d6 d5 d4 d3 d2 d1 d0 hicut1 0 0 0 loudness gain hicut2 0 1 hicut3 1 0 hicut4 1 1 gain msb loudness gain lsb d7 d6 d5 d4 d3 d2 d1 d0 0db 0 loudness hicut 0 0 0 0 0 1db 0 0 0 0 1 2db 0 0 0 1 0 3db 0 0 0 1 1 4db 0 0 1 0 0 5db 0 0 1 0 1 6db 0 0 1 1 0 7db 0 0 1 1 1 8db 0 1 0 0 0 9db 0 1 0 0 1 10db 0 1 0 1 0 11db 0 1 0 1 1 12db 0 1 1 0 0 13db 0 1 1 0 1 14db 0 1 1 1 0 15db 0 1 1 1 1 16db 1 0 0 0 0 17db 1 0 0 0 1 18db 1 0 0 1 0 19db 1 0 0 1 1 20db 1 0 1 0 0 prohibition 1 0 1 0 1 1 1 1 1 1 (6) about power on reset built-in ic initialization is made during power on of the s upply voltage. please send initial data to all addresses at supply voltage on. also, please turn on mute at the set side until initial data is sent. parameter symbol limit unit conditions min typ max rise time of v cc t rise 33 sec v cc rise time from 0v to 5v v cc voltage of release power on reset v por 4.1 v (7) about external compulsory mute terminal it is possible to forcibly set mute from the outside by setting inp ut voltage at the mute terminal. mute voltage condition mode gnd to 1.0v mute on 2.3v to v cc mute off establish the voltage of mute in the condition to be defined. : initial condition downloaded from: http:///
bd 3 7532 fv 20 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 ap plication information 1. function and specifications function specifications input selector (stereo input) single-end/diff/full-diff (possible to set the number of single-end/diff/full-diff as fol lows ) single-end differential full-differential mode 1 0 3 1 mode 2 1 2 1 mode 3 3 1 1 mode 4 4 0 1 mode 5 5 1 0 mode 6 6 0 0 table.1 combination of input selector input gain +2 0db to 0db (1db step) possible to use advanced switch for prevention of switching noi se. mute possible to use advanced switch for prevention of switching noi se. volume +15db to -79db (1db step) , - db possible to use advanced switch for prevention of switching noise. bass +20db to -20db (1db step) q=0.5, 1, 1.5, 2 fo=60, 80, 100, 120hz possible to use advanced switch when changing gain middle +20db to -20db (1db step) q=0.75, 1, 1.25, 1.5 fo=500, 1k, 1.5k 2.5khz possible to use advanced switch when changing gain treble +20db to -20db (1db step) q=0.75, 1.25 fo=7.5k, 10k, 12.5k, 15khz possible to use advanced switch when changing gain fader +15db to -79db(1db step), - db possible to use advanced switch for prevention of switching noise. loudness +2 0db to 0db(1db step) fo=250/400/800hz possible to use advanced switch for prevention of switching noi se. lpf fc=55/85/120/160hz, pass phase shift (0/180) downloaded from: http:///
bd 3 7532 fv 21 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 2. volume / fader volume attenuation data (db) d7 d6 d5 d4 d3 d2 d1 d0 (db) d7 d6 d5 d4 d3 d2 d1 d0 +15 0 1 1 1 0 0 0 1 - 33 1 0 1 0 0 0 0 1 +14 0 1 1 1 0 0 1 0 - 34 1 0 1 0 0 0 1 0 +13 0 1 1 1 0 0 1 1 - 35 1 0 1 0 0 0 1 1 +12 0 1 1 1 0 1 0 0 - 36 1 0 1 0 0 1 0 0 +11 0 1 1 1 0 1 0 1 - 37 1 0 1 0 0 1 0 1 +10 0 1 1 1 0 1 1 0 - 38 1 0 1 0 0 1 1 0 +9 0 1 1 1 0 1 1 1 - 39 1 0 1 0 0 1 1 1 +8 0 1 1 1 1 0 0 0 - 40 1 0 1 0 1 0 0 0 +7 0 1 1 1 1 0 0 1 - 41 1 0 1 0 1 0 0 1 +6 0 1 1 1 1 0 1 0 - 42 1 0 1 0 1 0 1 0 +5 0 1 1 1 1 0 1 1 - 43 1 0 1 0 1 0 1 1 +4 0 1 1 1 1 1 0 0 - 44 1 0 1 0 1 1 0 0 +3 0 1 1 1 1 1 0 1 - 45 1 0 1 0 1 1 0 1 +2 0 1 1 1 1 1 1 0 - 46 1 0 1 0 1 1 1 0 +1 0 1 1 1 1 1 1 1 - 47 1 0 1 0 1 1 1 1 0 1 0 0 0 0 0 0 0 - 48 1 0 1 1 0 0 0 0 -1 1 0 0 0 0 0 0 1 - 49 1 0 1 1 0 0 0 1 -2 1 0 0 0 0 0 1 0 - 50 1 0 1 1 0 0 1 0 -3 1 0 0 0 0 0 1 1 - 51 1 0 1 1 0 0 1 1 -4 1 0 0 0 0 1 0 0 - 52 1 0 1 1 0 1 0 0 -5 1 0 0 0 0 1 0 1 - 53 1 0 1 1 0 1 0 1 -6 1 0 0 0 0 1 1 0 - 54 1 0 1 1 0 1 1 0 -7 1 0 0 0 0 1 1 1 - 55 1 0 1 1 0 1 1 1 -8 1 0 0 0 1 0 0 0 - 56 1 0 1 1 1 0 0 0 -9 1 0 0 0 1 0 0 1 - 57 1 0 1 1 1 0 0 1 - 10 1 0 0 0 1 0 1 0 - 58 1 0 1 1 1 0 1 0 - 11 1 0 0 0 1 0 1 1 - 59 1 0 1 1 1 0 1 1 - 12 1 0 0 0 1 1 0 0 - 60 1 0 1 1 1 1 0 0 - 13 1 0 0 0 1 1 0 1 - 61 1 0 1 1 1 1 0 1 - 14 1 0 0 0 1 1 1 0 - 62 1 0 1 1 1 1 1 0 - 15 1 0 0 0 1 1 1 1 - 63 1 0 1 1 1 1 1 1 - 16 1 0 0 1 0 0 0 0 - 64 1 1 0 0 0 0 0 0 - 17 1 0 0 1 0 0 0 1 - 65 1 1 0 0 0 0 0 1 - 18 1 0 0 1 0 0 1 0 - 66 1 1 0 0 0 0 1 0 - 19 1 0 0 1 0 0 1 1 - 67 1 1 0 0 0 0 1 1 - 20 1 0 0 1 0 1 0 0 - 68 1 1 0 0 0 1 0 0 - 21 1 0 0 1 0 1 0 1 - 69 1 1 0 0 0 1 0 1 - 22 1 0 0 1 0 1 1 0 - 70 1 1 0 0 0 1 1 0 - 23 1 0 0 1 0 1 1 1 - 71 1 1 0 0 0 1 1 1 - 24 1 0 0 1 1 0 0 0 - 72 1 1 0 0 1 0 0 0 - 25 1 0 0 1 1 0 0 1 - 73 1 1 0 0 1 0 0 1 - 26 1 0 0 1 1 0 1 0 - 74 1 1 0 0 1 0 1 0 - 27 1 0 0 1 1 0 1 1 - 75 1 1 0 0 1 0 1 1 - 28 1 0 0 1 1 1 0 0 - 76 1 1 0 0 1 1 0 0 - 29 1 0 0 1 1 1 0 1 - 77 1 1 0 0 1 1 0 1 - 30 1 0 0 1 1 1 1 0 - 78 1 1 0 0 1 1 1 0 - 31 1 0 0 1 1 1 1 1 - 79 1 1 0 0 1 1 1 1 - 32 1 0 1 0 0 0 0 0 - 1 1 1 1 1 1 1 1 . initial condition downloaded from: http:///
bd 3 7532 fv 22 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 3. application circuit notes on wiring please connect the decoupling capacitor of the power supply in the shortest possible distance to gnd. gnd lines should be one-point connected. wiring pattern of digital shall be away from that of analog unit a nd crosstalk should not be acceptable. if possible, scl and sda lines of i 2 c bus should not be in parallel. the lines should be shielded, if they are adjacent to each other. if possible, analog input lines should not be in parallel . the lines should be shielded, if they are adjacent to each ot her. test pins (pin 14,15,16) should be open. unit r : [] c : [f] fil gnd sda scl mute 10 0.1 10 outf1 outf2 outr1 outr2 outs1 outs2 vcc 10 10 10 10 10 2.2 2.2 2.2 2.2 2.2 2.2 2.2 10 2.2 2.2 10 10 2.2 gnd vcc/2 28 27 26 25 24 23 22 21 20 19 18 17 16 15 volume/mute 3 band p- eq (tone control) loudness fader fader fader fader fader lpf input gain gnd iso amp input selector ( 3 single-end and 2 stereo iso) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 100 k 100 k 100 k 100 k 100 k 100 k 250 k gnd iso amp 250 k 250 k gnd iso amp 250 k 250 k gnd iso amp 250 k 250 k vcc i 2 c bus logic fader gain :+ 15 db - 79 b/1db step n o p o p n o i s e lpf fc = 55 / 85 / 120 / 160 hz loudness gain: 20 db 0 b/1 b step n o p o p n o i s e ? 0= 250 / 400 / 800 hz ? hicut1/2/3/4 3 band p-eq (tone control) gain + 20 db - 20 db /1db step n o p o p n o i s e ? bass f0= 60 / 80 / 100 / 120 hz q =0.5/1.0/1.5/2.0 ? meddle:f0= 500 /1k/1.5k/2.5khz q =0. 75 /1/1. 25 /1.5 ? treble f0=7.5k/ 10 k/ 12 .5k/ 15 khz q =0. 75 /1. 25 volume gain + 15 db - 79 db /1db step n o p o p n o i s e input gain gain + 20 db 0 db /1db step n o p o p n o i s e single1 single2 single3 gnd isolation 1 or single4 full differential or single5 , single6 gnd isolation2 gnd isolation3 single1 3 gnd isolation2,3 Q about single input 1 3 , it is possible to change from single input to gnd isolation input 2,3. gnd isolation1 , full differential single4 6 Q about gnd isolation 1 and full differential , it is possible to change from differential input to single input 4 6. 10 fader gain:+15db to - 79 db/1db step loudness gain:+20db to 0db/1db step gain: +20db to -20db/1 db step gain: +15db to -79db/1db step gain: +20db to 0db/1db step (note) about single input 1 to 3, it is possible to change from single input to gnd isolation input 2,3. (note) about gnd isolation1 and full differential, it is possible to change from differential input to single input 4 to 6. test3 test2 test1 downloaded from: http:///
bd 3 7532 fv 23 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 power dissipation about the thermal design of the ic characteristics of an ic are greatly affected by the temperature at which it is used. exceeding absolute maximum ratings may degrade and destroy the device. careful consideration mu st be given to the heat of the ic from the two standpoints of immediate damage and long-term reliability of operation. figure 23 . temperature derating curve power dissipation values vary according to the board on which th e ic is mounted. ssop -b28 1.5 1.0 0.5 0.0 0 25 50 75 100 125 150 1.063w ja = 117.6 c /w 85 reference data ambient temperature : ta (c) power dissipation : pd (w) measurement condition: rohm standard board board size : 70 x 70 x 1.6 ( mm 3 ) material : a fr4 grass epoxy board (3% or less of copper foil area) (note) values are actual measurements and are not guaranteed. downloaded from: http:///
bd 3 7532 fv 24 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 i/o equivalent circuits terminal no. terminal name terminal voltage equivalent circuit terminal description 1 2 3 4 5 6 a1 a2 b1 b2 c1 c2 4.25 a terminal for signal input. the input impedance is 100k (typ). 7 8 9 10 11 12 13 dp1 dn dp2 ep1 en1 en2 ep2 4.25 input terminal available to single/differential mode. the input impedance is 250k (typ). 15 mute a terminal for external compulsory mute. if terminal voltage is high level, the mute is off. and if the terminal voltage is low level, the mute is on. 18 19 20 21 22 23 outs2 outs1 outr2 outr1 outf2 outf1 4.25 a terminal for fader and subwoofer output. values in the pin explanation and input/output equivalent circuit are for reference purposes only. it is not a guaranteed value. gnd v cc 100k gnd v cc 250 v cc gnd v cc gnd 1.65v downloaded from: http:///
bd 3 7532 fv 25 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 i/o equivalent circuits - continued terminal no. terminal name terminal voltage equivalent circuit terminal description 24 vcc 8.5 power supply terminal. 25 scl a terminal for clock input of i 2 c bus communication. 26 sda a terminal for data input of i 2 c bus communication. 27 gnd 0 ground terminal. 28 fil 4.25 voltage for reference bias of analog signal system. the simple pre-charge circuit and simple discharge circuit for an external capacitor are built in. 14 16 17 test - test terminal values in the pin explanation and input/output equivalent circuit are for reference purposes only. it is not a guaranteed value. v cc gnd 1.65v vcc gnd 50 k 5 0k v cc gnd 1.65v downloaded from: http:///
bd 3 7532 fv 26 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 operational notes 1. reverse c onn ection of power supply connecting the power supply in reverse polarity can damage the ic. take precautions against reverse polarity when connecting the power supply, such as mounting an extern al diode between the power supply and the ic s power supply pins. 2. power supply lines design the pcb layout pattern to provide low impedance sup ply lines. separate the ground and supply lines of the digital and analog blocks to prevent noise in the groun d and supply lines of the digital block from affecting the a nalog block. furthermore, connect a capacitor to ground at all pow er supply pins . consider the effect of temperature and aging on the capacitance value when using electrolytic capac itors. 3. ground voltage ensure that no pins are at a voltage below that of the ground pin a t any time, even during transient condition. 4. ground wiring pattern when using both small-signal and large-current ground trace s, the two ground traces should be routed separately but connected to a single ground at the reference point of the a pplication board to avoid fluctuations in the small-si gnal ground caused by large currents. also ensure that the ground traces of external components do not cause variations on the ground voltage. the ground lines must be as short and th ick as possible to reduce line impedance. 5. thermal consideration should by any chance the power dissipation rating be exc eeded the rise in temperature of the chip may result in deterioration of the properties of the chip. in case of exceeding thi s absolute maximum rating, increase the board size and copper area to prevent exceeding the pd rating. 6. recommended operating conditions these conditions represent a range within which the expec ted characteristics of the ic can be approximately obtained . the electrical characteristics are guaranteed under the cond itions of each parameter. 7. inrush current when power is first supplied to the ic, it is possible that the internal logic may be unstable and inrush current may flow instantaneously due to the internal powering sequence a nd delays, especially if the ic has more than one power supply. therefore, give special consideration to power coup ling capacitance, power wiring, width of ground wiring, and routing of connections. 8. operation under strong electromagnetic field operating the ic in the presence of a strong electromagnetic field m ay cause the ic to malfunction. 9. testing on application boards when testing the ic on an application board, connecting a capacitor directly to a low-impedance output pin may subject the ic to stress. always d ischarge capacitors completely after each process or step. the ics power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. to prevent damage from static discharge, ground the ic during assembly and use similar precautions during transport and storage. 10. inter-pin short and mounting errors ensure that the direction and position are correct when mounti ng the ic on the pcb. incorrect mounting may result in damaging the ic. avoid nearby pins being shorted to each other especially to ground, power supply and output pin . inter-pin shorts could be due to many reasons such as m etal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 11. unused input pins input pins of an ic are often connected to the gate of a mos tran sistor. the gate has extremely high impedance and extremely low capacitance. if left unconnected, the electric field from the outside can easily charge it. the small ch arge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpected operation of the ic. so unless otherwise specifie d, unused input pins should be connected to the power supply or ground line. downloaded from: http:///
bd 3 7532 fv 27 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 operational notes C continued 12. regarding the input pin of the ic this monolithic ic contains p+ isolation and p substrate la yers between adjacent elements in order to keep them isolated. p-n junctions are formed at the intersection of t he p layers with the n layers of other elements, creating a parasitic diode or transistor. for example (refer to figure below): when gnd > pin a and gnd > pin b, the p-n junction operates as a paras itic diode. when gnd > pin b, the p-n junction operates as a parasitic transistor. parasitic diodes inevitably occur in the structure of the ic. the operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physica l damage. therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the gnd v oltage to an input pin (and thus to the p substrate) should be avoided. figure 24. example of monolithic ic structure 13. about a signal input part (a) about input coupling capacitor constant value the constant value of input coupling capacitor c(f) is decid ed with respect to the input impedance r in () at the input signal terminal of the ic that would be sufficient to form an rc characterized hpf. (b) about the input selector short short mode is the command which makes switch s sh =on of input selector part so that the input impedance r in of all terminals becomes small. switch s sh is off when short command is not selected. the constant time brought about by the small resistance inside and the capacitor outside the lsi becomes small when this command is used. the charge time of the capa citor becomes short. since short mode turns on the switch of s sh and makes it low impedance, please use it at no signal condi tion. 14. about mute terminal (pin 15) when power supply is off there should be no applied voltage to mute terminal (pin 15) when power-supply is off. if in case voltage is supplied to mute terminal, please inse rt a series resistor (about 2.2k) to mute terminal. (please refer to application circuit diagram.) 15. about test pin test pin should be open. pin 14. 16, 17 are test pins c f rin ? input 0 a(f) g db f hz ? ? ? ? ? ? 2 in 2 in fcr 2 1 fcr 2 fa ? ? ? ? n n p + p n n p + p substrate gnd n p + n n p + n p p substrate gnd gnd parasitic elements pin a pin a pin b pin b b c e parasitic elements gnd parasitic elements c be transistor (npn) resistor n region close-by parasitic elements downloaded from: http:///
bd 3 7532 fv 28 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 ordering information b d 3 7 5 3 2 f v - e 2 part number package fv: ssop-b28 packaging and forming specification e2: embossed tape and reel marking diagram ssop-b28 (top view) BD37532FV part number marking lot number 1pin mark downloaded from: http:///
bd 3 7532 fv 29 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 physical dimension, tape and reel information package name ssop-b28 (unit : mm) pkg : ssop-b28 drawing no. : ex156-5001 (max 10.35 (include.burr)) downloaded from: http:///
bd 3 7532 fv 30 / 30 tsz02201-0c2c0e100530-1-2 ? 20 15 rohm co., ltd. all rights reserved. www.rohm.com tsz22111 ? 15 ? 001 16.dec.2015 rev.001 revision history date revision changes 16.dec.2015 001 new release downloaded from: http:///
datasheet d a t a s h e e t notice-pga-e rev.00 2 ? 2015 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hm?s products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class ? class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation depending on ambient temperature. when used in sealed area, c onfirm that it is the use in the range that does not exceed t he maximum junction temperature. 8. confirm that operation temperat ure is within the specified range described in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. if the flow sol dering method is preferred on a surface-mount products, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification downloaded from: http:///
datasheet d a t a s h e e t notice-pga-e rev.00 2 ? 2015 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin considering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own indepen dent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a humidity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since concerned goods might be fallen under listed items of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. rohm shall not have any obligations where the claims, actions or demands arising from the co mbination of the products with other articles such as components, circuits, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the informati on contained in this document. pr ovided, however, that rohm will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the produc ts, subject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties. downloaded from: http:///
datasheet datasheet notice ? we rev.001 ? 201 5 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. downloaded from: http:///

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