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ts925 rail to rail high output current quad operational amplifier june 1998 1 2 3 4 13 14 15 16 5 6 7 8 12 11 10 9 + - + - - + o utput 1 inve rting inp ut 1 non-inve rting inp ut 1 v cc + + - v cc - non-inve rting inp ut 2 inve rting inp ut 2 o utput 2 p hantom ground o utput 4 inve rting inp u t 4 non -inverting inp u t 4 non -inverting inp u t 3 inve rting inp u t 3 o utput 3 stdby pin connections ? . rail to rail input and output . low noise : 9nv / `` ``` ` hz . low distortion . high output current : 80ma (able to drive 32 w loads) . high speed : 4mhz, 1.3v/ m s . operating from 2.7v to 12v . low input offset voltage : 900 m v max. (ts925a) . adjustable phantom ground (v cc /2) . standby mode . esd internal protection : 2kv . latch-up immunity . macromodel included in this specification description the ts925 is a rail to rail quad bicmos operational amplifier optimized and fully specified for 3v and 5v operations. it includes a high output current and low impedance phantom ground (no external reference re- quested). the ts925 exhibits a very low noise, low distortion and high output current making this device an excellent choice for high quality, low voltage or battery operated audio/telecom systems. this device is stable when charging the output with capacitive loads up to 500pf. when the standby mode is enabled, the total consumption drops to 6 m a(v cc = 3v). applications . headphone amplifier . soundcard amplifier, piezoelectric speaker . mpeg boards, multimedia systems, ... . cordless telephones and portable communica- tion equipment . line driver, buffer . instrumentation with low noise as key factor order codes part number temperature range package ndp ts925i -40, +125 o c ??? n dip16 (plastic package) d so16 (plastic micropackage) p tssop16 (thin shrink small outline package) 1/16
absolute maximum ratings symbol parameter value unit v cc supply voltage - (note 1) 14 v v id differential input voltage - (note 2) 1v v i input voltage - (note 3) -0.3 to 14 v t oper operating free air temperature range -40 to +125 o c t j maximum junction temperation 150 o c r thja thermal resistance junction to ambient 130 o c/w output short-circuit duration see note 4 notes : 1. all voltage values, except differential voltage are with respect to network ground terminal. 2. differential voltages are the non-inverting input terminal with respect to the inverting input t erminal. 3. the magnitude of input and output voltages must never exceed v cc + +0.3v. 4. short-circuits can cause excessive heating. destructive dissipation can result from simultaneous short-circuit on all amplifiers. do not short circuit outputs to v cc + when exceeding 8v : this can induce reliability defects. operating conditions symbol parameter value unit v cc supply voltage 2.7 to 12 v v icm common mode input voltage range v cc -0.2 to v cc +0.2 v ts925 2/16
electrical characteristics v cc + =3v,v cc - =0v,t amb =25 o c (unless otherwise specified) operational amplifier symbol parameter test condition min. typ. max. unit v io input offsetvoltage ts925 ts925a t min. global circuit symbol parameter test condition min. typ. max. unit i cc total supply current no load, v out =v cc/2 57ma i stby total supply current in standby (pin 9 connected to v cc - ) 6 m a v enstby pin 9 voltage to enable the standby mode - (note 1) t min. t amb t max. 0.3 0.4 v v distby pin 9 voltage to disable the standby mode - (note 1) t min. t amb t max. 1.1 1 v note 1 : the standby mode is currently enabled when pin 9 is grounded and disabled when pin 9 is left open. phantom ground symbol parameter test condition min. typ. max. unit v pg phantom ground output voltage no output current v cc/2 -5% v cc/2 vcc/2 +5% v i pgsc phantom ground output short circuit current (sourced) 12 18 ma z pg phantom ground impedance dc to 20khz 3 w e npg phantom ground output voltage noise (f = 1khz) cdec = 100pf cdec = 1nf cdec = 10nf (note 2) 200 40 17 nv M ``` hz i pgsk phantom ground output short circuit current (sinked) 12 18 ma note 2 : c dec is the decoupling capacitor on pin 9. ts925 4/16
electrical characteristics v cc + =5v,v cc - =0v,t amb =25 o c (unless otherwise specified) operational amplifier symbol parameter test condition min. typ. max. unit v io input offsetvoltage ts925 ts925a t min. global circuit symbol parameter test condition min. typ. max. unit i cc total supply current no load, v out =v cc/2 68ma i stby total supply current in standby (pin 9 connected to v cc - ) 10 m a v enstby pin 9 voltage to enable the standby mode - (note 1) t min. t amb t max. 0.3 0.4 v v distby pin 9 voltage to disable the standby mode - (note 1) t min. t amb t max. 1.1 1 v note 1 : the standby mode is currently enabled when pin 9 is grounded and disabled when pin 9 is left open. phantom ground symbol parameter test condition min. typ. max. unit v pg phantom ground output voltage no output current v cc/2 -5% vcc/2 vcc/2 +5% v i pgsc phantom ground output short circuit current (sourced) 12 18 ma z pg phantom ground impedance dc to 20khz 3 w e npg phantom ground output voltage noise (f = 1khz) cdec = 100pf cdec = 1nf cdec = 10nf (note 2) 200 40 17 nv M ``` hz i pgsk phantom ground output short circuit current (sinked) 12 18 ma note 2 : c dec is the decoupling capacitor on pin 9. ts925 6/16
5.5 4.4 3.3 2.2 1.1 0 6 12 supply current (ma) sup ply voltage (v) total supply current versus supply voltage with no load 1.4 1.3 1.2 1.1 1 0.9 -55 25 125 ambient temperature ( c) supply current per amplifier (ma) v=0/5v cc supply current/amplifier versus temperature output short-circuit current (ma) outp ut voltage (v) 0 612 100 80 60 40 20 0 -20 -40 -60 -80 -100 sink s ource v=0/12v t=25 c cc amb. output short circuit current versus output voltage output short-circuit current (ma) outp ut voltage (v) 0 1 5 100 80 60 40 20 0 -20 -40 -60 -80 -100 sink source v=0/5v t=25 c cc amb. 23 4 output short circuit current versus output voltage output short-circuit current (ma) outp ut voltage (v) 03 100 80 60 40 20 0 -2 0 -40 -60 -80 -100 sink source v=0/3v t=25 c cc amb. 1.5 output short circuit current versus output voltage 783 devices from 3 lots - vcc=0/3v - t=25 c -0.55 -0.45 -0.35 -0.25 -0.15 -0.05 0.05 0.15 .25 .35 .45 .55 0 10 20 30 40 50 60 70 80 90 100 110 vio (mv): average on 4 operators per device input offset voltage distribution ts925 7/16
100 90 80 70 60 50 -55 25 125 ambient temperature ( c) output short-circuit current (ma) v=0/5v cc s ink s ource output short circuit current versus temperature 30 20 10 0 -10 -20 -30 open loop voltage gain (db) frequency (hz) 10m 1m 100k 40 270 0 90 180 phase gain -40 -50 t = 25 c v cc = 1.5v amb. c = 500pf l voltage gain and phase versus frequency 0.03 0.025 0.02 0.015 0.01 0.005 0 0.01 0.03 0.1 0.3 1 3 10 30 thd + noise (%) frequency (khz) r=2k v = 10vpp v=0/12v g=-1 l o cc distorsion + noise versus frequency 0.02 0.015 0.01 0.005 0 0.01 0.03 0.1 0.3 1 3 10 30 thd + noise (%) frequency (khz) r=2k v = 10vpp v=0/12v gain = 1 l o cc thd + noise versus frequency 0.04 0.032 0.024 0.16 0.008 0 0.01 0.03 0.1 0.3 1 3 10 30 thd + noise (%) fr equenc y (khz) r=32 v = 4vpp v=0/5v gain = 1 l o cc w thd + noise versus frequency 0.7 0.01 0.03 0.1 0.3 1 3 10 30 thd + noise (%) frequency (khz ) 0.6 0.5 0.4 0.3 0.2 0.1 0 r=32 w v = 2vpp v=0/3v ga in = 10 l o cc thd + noise versus frequency ts925 8/16
16 14 12 6 4 2 0 frequency (hz) 10 100 1k 100k 18 10k en - equivalent input noise voltage (nv/vhz) 10 8 r=100 s t=25 c v cc = 1.5v amb. w equivalent input noise voltage versus frequency 0 0.4 0.8 1.2 1.6 2 total supply current (ma) v s tandby(v) 5 4 3 2 1 0 v=0/3v cc total supply current versus standby input voltage 0 6 12 20 16 12 8 4 0 -4 -8 -1 2 -1 6 -2 0 v=0/12v cc i (ma) pgsc phantom ground short circuit output current versus phantom ground output voltage ts925 9/16
application note preamplifier and speaker driver using ts925 by f. maricourt the ts925 is an input/output rail to rail quad bicmos operational amplifier. it is able to operate with low supply voltage (2.7v) and to drive low output loads such as 32 w . as an illustration of these features, the following technical note is describing the way to use all the advantages of the device in a global audio applica- tion. application circuit the figure 1 is showing that two operators (a1, a4) are used in a preamplifier configurationand the two others in a push-pull configuration driving a head- set. the phantom ground is used as a common refence level (v cc/2 ). the power supply is delivered with 2 batteries lr6 (2x1.5v nominal). preamplifier : the operators a1 and a4 are wired with a non inverting gain of respectively : ? a1# (r4/(r3+r17)) ? a4# r6/r5 with the following values choosen : ? r4=22k w - r3=50 w - r17=1.2k w ? r6=47k w - r5=1.2k w , the gain of the preamplifier chain is then 58db. nevertheless, the gain of a1 can be adjusted by choosing a jfet transistor q1 instead of r17. figure 1 : electrical schematic ts925 10/16
100 1000 10000 100000 1000000 10000000 1.0e+08 20 30 40 50 60 70 frequency (hz) voltage gain (db) figure 2 : frequency response of the global preamplifier chain 10 100 1000 10000 100000 7 8 9 10 11 12 13 14 15 frequency (hz) noise density (nv/sqrt(hz)) figure 3 : voltage noise density versus frequency at preamplifier output headphone amplifier : the operators a2 and a3 are organized in a push-pull configuration with a gain of 5. the stereo inputs can be connected to a cd-player and ts925 drives directly the head- phone speakers.this configuration underscores the ability of the circuit to drive 32 w load with a maximum output swing and a high fidelity for repro- ducing sounds and musics. figure 4 is displaying the available swing at the headset outputs : this is done with ts925 (non distorded curve) and with two other rail to rail competitor parts. figure 4 : maximul output swing voltage at headphone outputs 100 1000 10000 100000 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 hz thd+noise (%) figure 5 : thd+noise versus frequency (headphone outputs) ts925 11/16
** standard linear ics macromodels, 1996. ** connections : * 1 inverting input * 2 non-inverting input * 3 output * 4 positive power supply * 5 negative power supply .subcktts92513245(analog) ********************************************************* .model mdth d is=1e-8 kf=2.664234e-16 cjo=10f * input stage cip 2 5 1.000000e-12 cin 1 5 1.000000e-12 eip 10 5 2 5 1 ein 16 5 1 5 1 rip 10 11 8.125000e+00 rin 15 16 8.125000e+00 ris 11 15 2.238465e+02 dip 11 12 mdth 400e-12 din 15 14 mdth 400e-12 vofp 12 13 dc 153.5u vofn 13 14 dc 0 ipol 13 5 3.200000e-05 cps 11 15 1e-9 dinn 17 13 mdth 400e-12 vin 17 5 -0.100000e+00 dinr 15 18 mdth 400e-12 vip 4 18 0.400000e+00 fcp 4 5 vofp 1.865000e+02 fcn 5 4 vofn 1.865000e+02 fibp 2 5 vofp 6.250000e-03 fibn 5 1 vofn 6.250000e-03 * gm1 stage *************** fgm1p 119 5 vofp 1.1 fgm1n 119 5 vofn 1.1 rap 119 4 2.6e+06 ran 119 5 2.6e+06 * gm2 stage *************** g2p 19 5 119 5 1.92e-02 g2n 19 5 119 4 1.92e-02 r2p 19 4 1e+07 r2n 19 5 1e+07 ************************** vint1 500 0 5 gconvp 500 501 119 4 19.38 !envoie ds vp, i(vp)=(v119-v4)/2/ut vp 501 0 0 gconvn 500 502 119 5 19.38 !envoie ds vn, i(vn)=(v119-v5)/2/ut vn 502 0 0 ********* orientation isink isource ******* vint2 503 0 5 fcopy 503 504 vout 1 dcopyp 504 505 mdth 400e-9 vcopyp 505 0 0 dcopyn 506 504 mdth 400e-9 vcopyn 0 506 0 *************************** f2pp 19 5 poly(2) vcopyp vp 00000.5!m ultiplie i(vout)*i(vp)=iout*(v119-v4)/2/ut f2pn 19 5 poly(2) vcopyp vn 0 0 0 0 0.5 !multiplie i(vout)*i(vn)=iout*(v119-v5)/2/ut f2np 19 5 poly(2) vcopyn vp 0 0 0 0 1.75 !multiplie i(vout)*i(vp)=iout*(v119-v4)/2/ut f2nn 19 5 poly(2) vcopyn vn 0000 1.75 !multiplie i(vout)*i(vn)=iout*(v119-v5)/2/ut * compensation ************ cc 19 119 25p * output*********** dopm 19 22 mdth 400e-12 donm 21 19 mdth 400e-12 hopm 22 28 vout 6.250000e+02 vipm 28 4 5.000000e+01 honm 21 27 vout 6.250000e+02 vinm 5 27 5.000000e+01 vout 3 23 0 rout 23 19 6 cout 3 5 1.300000e-10 dop 19 25 mdth 400e-12 vop 4 25 1.052 don 24 19 mdth 400e-12 von 24 5 1.052 .ends . rail to rail input and output . low noise : 9nv `` ``` ` hz . low distortion . high output current : 50ma min. (able to drive 32 w loads) . high speed : 4mhz, 1.3v/ m s . operating from 2.7v to 12v macromodel ts925 12/16
electrical characteristics v cc + = 3v , v cc - = 0v, r l ,c l connected to v cc /2, t amb =25 o c (unless otherwise specified) symbol conditions value unit v io 0mv a vd r l = 10k w 200 v/mv i cc no load, per operator 1.2 ma v icm -0.2 to 3.2 v v oh r l = 10k w 2.95 v v ol r l = 10k w 25 mv i sink v o =3v 80 ma i source v o =0v 80 ma gbp r l = 600 w 4 mhz sr r l = 10k w, c l = 100pf 1.3 v/ m s ? mr l = 600 w 68 degrees ts925 13/16
pm-dip16.eps package mechanical data 16 pins - plastic dip dimensions millimeters inches min. typ. max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050 dip16.tbl ts925 14/16
pm-so16.eps package mechanical data 16 pins - plastic micropackage (so) dimensions millimeters inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.2 0.004 0.008 a2 1.6 0.063 b 0.35 0.46 0.014 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.020 c1 45 o (typ.) d 9.8 10 0.386 0.394 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.150 0.157 g 4.6 5.3 0.181 0.209 l 0.5 1.27 0.020 0.050 m 0.62 0.024 so16.tbl ts925 15/16
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publ ication supersedes and replaces all infor mation previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a trademark of stmicroelectronics ? 1998 stmicroelectronics printed in italy all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. order code : package mechanical data 16 pins - thin shrink small outline package dim. millimeters inches min. typ. max. min. typ. max. a 1.20 0.05 a1 0.05 0.15 0.01 0.006 a2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.15 0.30 0.005 0.15 c 0.1 0.20 0.003 0.012 d 4.90 5.00 5.10 0.192 0.196 0.20 e 6.40 0.252 e1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.025 k0 o 8 o 0 o 8 o l 0.50 0.60 0.75 0.09 0.0236 0.030 ts925 16/16

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