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1/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. sound processors for home theater systems 5.1ch sound processors bd3813ks,bd3815ks description the bd3813ks and bd3815ks sound processors integrate a gain amp and volume/bass/treble controls on a single chip, making them optimally suited for use in audio applications, su ch as av receivers, home theater systems and mini-component systems. used in combination with the bd3812f, a 2ch volume ic, the units enable 6.1ch and 7.1ch operation. in addition, utilization of a bicmos proce ss ensures a wide dynamic range (129db). features 1) wide dynamic range: 129db (tone bypass, vol=mute, ihf-a) 2) independent 6 channels for master volume (0 to -95 db, mute 1db/step) implementation of a resistance ladder type circuit reduces residual noise and shock sounds during switching. 3) low current consumption achieved th rough utilization of bicmos processes 4) maximum output voltage: 4.2vrms (vcc=7v, vee=-7v, rl=10k ? ) 5) built-in 5ch independent input gain amplif ier - useful for amplifying input signals 6) built-in 2ch output port 7) 2-wire serial control (for both 3.3v and 5v) applications av receivers, home theater s ystems and mini-component systems line up matrix parameter bd3813ks bd3815ks mode selector yes yes input gain 0 ? 6 ? 12db 0 ? 6 ? 18db volume 0 to -95db 1db/step 0 to -95db 1db/step bass, treble ? 14db 2db/step ? 14db 2db/step number of ports 2 2 package sqfp56 sqfp56 no.10081eat04 downloaded from: http:///
technical note 2/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks absolute maximum ratings (ta=25 ) parameter symbol ratings unit power supply voltage v cc 7.5 *1 v v ee -7.5 input signal voltage v in v cc +0.3 to vee-0.3 v power dissipation pd 1000 *2 mw operating temperat ure range topr 20 to 75 c storage temperature range tastg 55 to 125 c *1 applying voltage only to the v cc side, even if within the specified power supply voltage range, may cause excessive current to flow, resulting in permanen t damage to the ic. therefore, when star ting up the power supplies, vee and v cc should either be powered on simultaneously, or vee first, followed by v cc . *2 please note the derating characteristics above ta=25 : 10mw/ (mounted on a 70mmx70mmx1.6mm sized board). operating conditions (normal function at ta=25 ) parameter symbol ratings unit min. typ. max. operating supply voltage v cc 5 7 7.3 v v ee -7.3 -7 -5 downloaded from: http:///
technical note 3/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks electrical characteristics ta = 2 5 , vcc=7v, vee=-7v, f=1khz, vin=1vrms, rl=10k ? , rg=600 ? input gain=0db, master volume=0db, bass bnd treble=0db, unless otherwise noted. parameter symbol limits unit conditions min. typ. max. total output circuit current vcc iq D 10 20 ma no signal vee -20 -10 D output voltage gain 1 gv1 -2 0 2 db measure : pin31, 29, 27, 25, 23, 21 output voltage gain 2 gv2 -2 0 2 db measure : pin19 total harmonic distortion ratio 1 thd1 D 0.004 0.05 % measure : pin31, 29, 27, 25, 23, 21 bw=400 30khz total harmonic distortion ratio 2 thd2 D 0.004 0.05 % measure : pin19 bw=400 30khz maximum output voltage 1 vomax1 3.4 4.2 D vrms measure : pin31, 29, 27, 25, 23, 21 thd=1% maximum output voltage 2 vomax2 3.4 4.2 D vrms measure : pin19 thd=1% output noise voltage 1 vno1 D 2.0 12 vrms measure : pin 31,29 rg=0 ? , tone: on, bw=ihf-a D 1.5 8.0 vrms measure : pin 31,29 rg=0 ? , tone: by-pass, bw=ihf-a output noise voltage 2 vno2 D 1.5 8.0 vrms measure : pin 27,25,23,21 rg=0 ? , bw=ihf-a output noise voltage 3 vno3 D 1.0 5.0 vrms measure : pin 19 rg=0 ? , bw=ihf-a crosstalk between channels rch ? lch ctcrl D -95 -80 db measure : pin29(outfl) rg=0 ? , bw=ihf-a reference : pin31(outfr)=1vrms crosstalk between channels lch ? rch ctclr D -95 -80 db measure : pin31(outfr) rg=0 ? , bw=ihf-a reference : pin29(outfl)=1vrms crosstalk between selectors dvd ctsa D -95 -80 db measure : pin 31,29,27,25, 23,21,19 rg=0 ? , bw=ihf-a crosstalk between selectors d/a ctsb D -95 -80 db measure : pin 31,29,27,25, 23,21,19 rg=0 ? , bw=ihf-a downloaded from: http:///
technical note 4/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks parameter symbol limits unit conditions min. typ. max. volume output volume control range gvr -98 -95 -92 db measure : pin31, 29, 27, 25, 23, 21 vin=3vrms volume setting error 1 ve1 -2 0 2 db 0 to C53db measure : pin31, 29, 27, 25, 23, 21 vin=3vrms volume setting error 2 ve2 -3 0 3 db -54 to C95db measure : pin31, 29, 27, 25, 23, 21 vin=3vrms channel balance vcb -0.5 0 0.5 db measure : pin31, 29, 27, 25, 23, 21 vin=3vrms, volume=0db maximum attenuation vmin D -115 -105 db bw=ihf-a measure : pin31, 29, 27, 25, 23, 21 vin=3vrms input gain input gain control range (bd3813ks) gig 10 12 14 db measure : pin31, 29, 27, 25, 23, 21, 19 vin=0.4vrms input gain control range (bd3815ks) 16 18 20 db measure : pin31, 29, 27, 25, 23, 21, 19 vin=0.4vrms input gain setting error (bd3813ks) gie -2 0 2 db measure : pin31, 29, 27, 25, 23, 21, 19 vin=0.4vrms input gain setting error (bd3815ks) -2 0 2 db measure : pin31, 29, 27, 25, 23, 21, 19 vin=0.4vrms treble treble maximum boost gain gtb 12 14 16 db measure : pin 31, 29 f=15khz, vin=0.4vrms treble maximum cut gain gtc -16 -14 -12 db measure : pin 31, 29 f=15khz, vin=0.4vrms treble step resolution tr D 2 D db measure : pin 31, 29 f=15khz, vin=0.4vrms treble gain setting error te -2 0 2 db measure : pin 31, 29 f=15khz, vin=0.4vrms bass bass maximum boost gain gbb 12 14 16 db measure : pin 31, 29 f=100hz, vi=0.4vrms bass maximum cut gain gbc -16 -14 -12 db measure : pin 31, 29 f=100hz, vin=0.4vrms bass step resolution br D 2 D db measure : pin 31, 29 f=100hz, vin=0.4vrms bass gain setting error be -2 0 2 db measure : pin 31, 29 f=100hz, vin=0.4vrms port port h output ph 4.5 4.9 D v measure : pin11,12 vdd=5v, rl=47k ? * this product is not designed to be resistant against radiation downloaded from: http:///
technical note 5/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks timing chart 1) signal timing conditions ? data is read on the rising edge of the clock. ? latch is read on the falling edge of the clock. ? the latch signal must terminate with the low state. *to avoid malfunction, the clock and data signals must terminate with the low state. fig.1 parameter symbol limits unit min. typ. max. minimum clock width twc 2.0 ? ? s minimum data width twd 2.0 ? ? s minimum latch width twl 2.0 ? ? s low hold width twh 2.0 ? ? s data set-up time (data ? clock) tsd 1.0 ? ? s data hold time ( clock ? data ) thd 1.0 ? ? s latch set-up time ( clock ? latch) tsl 1.0 ? ? s latch hold time ( data ? latch ) thl 1.0 ? ? s latch low set-up time ts 1.0 ? ? s latch low hold time th 1.0 ? ? s 2) control signal voltage conditions parameter condition limits unit min. typ. max.( vcc) h input voltage vcc=5 ? 7.3v v ee =-5 ? -7.3v 2.2 ? 5.5 v l input voltage 0 ? 1.0 v cl clock da data latch thd thd th ts tsl thl tsd twc twh twd twl data data latch 90% 90% 90% 90% 10% 10% 10% 90% 90% 90% 90% 90% 10% 10% 10% twc terminate with low downloaded from: http:///
technical note 6/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks 3) control data format - basic configuration input direction msb lsb data d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 data select address ? control data formats input direction select address data 1 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 input gain fr/fl input gain sr/sl input gain c input gain sw input gain sb sw1 0:a1:b sw2 0:a1:b sw3 0:a 1:b 0 0 0 0 data 2 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 treble bass ton e port a 0:l 1:h port b 0:l 1:h * * 1 0 0 0 data 3 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 master volume frch master volume flch 0 0 1 data 4 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 master volume srch master volume slch 0 1 0 data 5 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 master volume cch master volume swch 0 1 1 changing the select address settings allows se lection of four different control formats. for select address, values except t hose shown above must not be specified. the address data must be initialized after every power on. * indicates 0 or 1. (example) input direction msb lsb msb lsb msb lsb msb lsb msb lsb data1 l data 2 l data 3 l data 4 l data 5 l l means latch. after power on, only the desired data can be set for the second and subsequent times,. (example) when changing the bass, input direction msb lsb data 2 l l means latch. downloaded from: http:///
technical note 7/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks application circuit 1) bd3813ks / bd3815ks units resistor: ? capacitor: f fig. 2 dvd 6.1ch b infra infla insra insla inca infrb inflb inswb inslb insrb incb 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 25 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 inswa insbb a da cl vee vcc outsb outc outsl outsr outsw outfl outfr 4.7k 4.7k 4700p 4700p 10 logic tone 47k 47k 47k 47k 47k 47kk 47k 47k 47k 47k 47k 47k 47k 47k 47k 47 47 d/a 6.1ch insba 47k vdd sw1 a b a b a b a b a b a b a b a b a b a b sw2 sw3 10 10 10 10 10 0.1 0.1 0.1 0.1 downloaded from: http:///
technical note 8/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks pin description pin no. pin name description pin no. pin name description 1 gnd1 ground pin 29 outfl lch output pin 2 goutsw input gain output for subwoofer pin 30 gnd9 ground pin 3 vinsw volume input for subwoo fer pin 31 outfr rch output pin 4 goutsr input gain output for surround rch pin 32 gnd10 ground pin 5 vinsr volume input for surround rch pin 33 bnf2l lch bass filter pin 2 6 goutsl input gain output for surroun d lch pin 34 bnf1l lch bass filter pin 1 7 vinsl volume input for surround lch pin 35 bnf2r rch bass filter pin 2 8 goutc input gain output for center speaker pin 36 bnf1r lch bass filter pin 1 9 vinc volume input for center speaker pin 37 tnfl lch treble filter pin 10 gnd2 ground pin 38 tnfr rch treble filter pin 11 porta output for port pin 39 vinfr rch volume input pin 12 portb output for port pin 40 goutfr rch input gain output pin 13 da serial data, latch input pin 41 vinfl lch volume input pin 14 cl serial clock input pin 42 goutfl lch input gain output pin 15 vdd power supply for port pin 43 infra input for rch dvd pin 16 vee (-) power supply pin 44 infla input for lch dvd pin 17 gnd3 ground pin 45 inswa input for swch dvd pin 18 vcc (+) power supply pin 46 insra input for srch dvd pin 19 outsb surround back output pin 47 insla input for slch dvd pin 20 gnd4 ground pin 48 inca input for cch dvd pin 21 outc center speaker output pin 49 insba input for sbch dvd pin 22 gnd5 ground pin 50 infrb input for rch dsp pin 23 outsl output for surround lch pin 51 inflb input for lch dsp pin 24 gnd6 ground pin 52 inswb input for swch dsp pin 25 outsr output for surround rch pin 53 insrb input for srch dsp pin 26 gnd7 ground pin 54 inslb input for slch dsp pin 27 outsw subwoofer output pin 55 incb input for cch dsp pin 28 gnd8 ground pin 56 insbb input for sbch dsp pin downloaded from: http:///
technical note 9/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks equivalent circuits pin no. pin name pin voltage equivalent circuit description 2 4 6 8 40 42 goutsw goutsr goutsl goutc goutfr goutfl 0 vcc vee sound signal output pins from input gain 3 5 7 9 39 41 vinsw vinsr vinsl vinc vinfr vinfl 0 vcc vee sound signal input pins to master volume, input impedance: 20k ? (typ.) 11 12 porta portb ? vc c vee vdd open drain output pins 13 da ? vcc vee serial data input pin 14 cl ? vcc vee serial clock input pin downloaded from: http:///
technical note 10/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks pin no. pin name pin voltage equivalent circuit description 19 21 23 25 27 29 31 outsb outc outsl outsr outsw outfl outfr 0 vcc vee sound signal output pins 33 35 bnf2l bnf2r 0 v cc vee bass frequency characteristic/gain setting pins 34 36 bnf1l bnf1r 0 v cc vee bass frequency characteristic/gain setting pins 37 38 tnfl tnfr 0 v cc vee treble frequency characteristic/gain setting pins 43 44 45 46 47 48 49 50 51 52 53 54 55 56 infra infla inswa insra insla inca insba infrb inflb inswb insrb inslb incb insbb 0 vcc vee sound signal input pins; input impedances determined by external resistances downloaded from: http:///
technical note 11/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks switch description output input (sw1 ? a sw2,3 ? b (default sw2 ? a sw3 ? b sw2 ? b sw3 ? a fr fr fr fr fl fl fl fl sw sw sw sw sr sr fr sr sl sl fl sl c c c c sb sb sb c sw1 a: select input line a b: select input line b sw2 a: output the signals of the fr and fl inputs onto the surround outputs (sr, sl) used when the source is stereo. b: output the signals of the sr and sl inputs onto the surround outputs (sr, sl) used when the source is 5.1ch or 6.1ch. sw3 a: output the c input signal onto sb output used when the source is 5.1ch with the 6.1ch speaker system installed. b: output the sb input signal onto the sb output used when the source is 6.1ch with the 6.1ch speaker system installed. downloaded from: http:///
technical note 12/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks setting constants for tone control filters 1) treble filter fc=1/2 ? (r2)c (hz) g=20log(r1+r2+zc)/(r2+zc) (db) zc=1/j ? c ( ? ) standard values of r1, r2 (reference) treble boost amount cut amount resistance (k ? ) ? typ. r1 r2 0db 0 20 ? 2db 4.1 15.9 ? 4db 7.3 12.7 ? 6db 10.3 9.7 ? 8db 12.3 7.7 ? 10db 14.0 6.0 ? 12db 15.4 4.6 ? 14db 16.5 3.5 ? the actual boost/cut amounts may deviate from the standard values to some degree. g c g 3db g 3db fig.4 r2 in pin 37, 38 out c + - r1 fig.3 downloaded from: http:///
technical note 13/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks 2) bass filter standard values of r2, r3 (reference) (r1=4.7k ? , c1=c2=0.1 ? f boost amount cut amount resistance (k ? ) typ. ? r2 r3 0db 0 41.0 ? 2db 10.8 30.2 ? 4db 19.3 21.7 ? 6db 26.0 15.0 ? 8db 31.2 9.8 ? 10db 35.4 5.6 ? 12db 38.4 2.6 ? 14db 41.0 0 ? the actual boost/cut amounts may deviate from the standard values in some degree. ? bass filter feature to set the f0 and q values of the bass characteristics, refer to the external components of the bass filter shown in the upper-left figure. g o g g fig.6 fig. 5 c1 c2 r3 r2 in r1 + - ? ? (hz) c1c2 + r3 r2 r1 2 1 f 0 = when c1=c2 r1 g = +2 20log r2+r3 r1 r3 +2 (db) c1c2r2 q = c1+c2 1 r1 pin34, 36 pin33, 35 downloaded from: http:///
technical note 14/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks -10 -8 -6 -4 -2 0 2 4 6 8 10 10 100 1000 10000 100000 uncy hz gain (db) 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 input voltage (vrms) output voltage (vrms) -10 -8 -6 -4 -2 0 2 4 6 8 10 024681 0 power supply (v) circuit current (ma) -20 -15 -10 -5 0 5 10 15 20 10 100 1000 10000 100000 frequency (hz) gain (db) 0.0001 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 input voltage (vrms) thd+n (%) -20 -15 -10 -5 0 5 10 15 20 10 100 1000 10000 100000 frequency (hz) gain (db) -20 -15 -10 -5 0 5 10 15 20 10 100 1000 10000 100000 frequency (hz) gain (db) 0 1 2 3 4 5 6 11 01 0 0 impedance (k ) port voltage (v) -20 -15 -10 -5 0 5 10 15 20 10 100 1000 10000 100000 frequency (hz) gain (db) reference data fig.7 circuit current - power supply fig.8 voltage gain - frequency fig.9 output voltage - input voltage vcc vee +14db +14db fig.10 thd+n Cinput voltage fig.11 bass gain - frequency fig.12 treble gain - frequency fig.13 input gain - frequency (bd3813ks) fig.14 input gain - frequency (bd3815ks) fig.15 port h voltage C load resistance -14 ? +14db 2db/step - 14db -14 ? +14db 2db/step -14db 18db 0db 6db 12db 0db 6db downloaded from: http:///
technical note 15/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks notes for use (1) the numbers and data shown above are represent ative design values and are not guaranteed. (2) although the sample application circuits are guaranteed, fu rther verification of the electrical characteristics are recommended. when modifying external components before use, ensure that sufficient margins are in place by taking into account variations in the external components themselves as well as the lsi regarding both static and transient characteristics. (3) absolute maximum ratings operating or testing the ic over the maximum ratings may damage the part itself as well as peripheral components. therefore, please ensure that the specifications are never exceeded. in additi on, implementation of fuses or other physical safety measures is recommended. (4) v ee potential ensure that the v ee pin voltage is at the lowest potential and that no other pi n is at a lower voltage, including transient phenomena. (5) thermal design implement thermal designs that take into account t he power dissipation under actual operating conditions. (6) shorts between pins and erroneous installation incorrect mounting may damage the ic. in addition, the presenc e of foreign particles between the pins, a pin and the power supply, or a pin and gnd may result in destruction. (7) operation in a strong magnetic field operation in a strong magnetic field may cause malfunction. (8) serial control the wiring pattern of the cl and da terminals should be routed so as not to cause interference with the analog signal related lines. (9) power on/off (a) during power on/off a shock sound will be gen erated. therefore, us e the mute function. (b) when turning on the power supplies, v ee and v cc should either be powered on simultaneously, or v ee first, followed by v cc , since if v cc is started up first, an excessive current may pass v cc through to v ee . (10) function switching for functions except the master volume, treble and ba ss controls, use of the mute function is recommended. (11) port power supply the port power supply should be turned on following v cc and v ee . if the port is not used, the port power supply must be connected to v ee . downloaded from: http:///
technical note 16/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks 0 200 400 600 800 1000 1200 0 25 50 75 100 125 ta( ) power dissipation pd mw) 1000mw thermal derating curve fig. 16 bd3813ks, bd3815ks board size: 70mm x 70mm x 1.6mm raw material: fr4 glass epoxy board (copper area less than 3%) downloaded from: http:///
technical note 17/17 www.rohm.com 2010.06 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd3813ks,bd3815ks ordering part number b d 3 8 1 3 k s - part no. part no. 3813 3815 package ks: sqfp56 packaging and forming specification none :tray (unit : mm) sqfp56 0.15 0.65 42 29 2815 14 1 4356 10.0 0.2 12.4 0.3 10.0 0.2 12.4 0.3 0.15 0.1 0.5 0.05 2.15 0.1 0.3 0.1 ? order quantity needs to be multiple of the minimum quantity. tray containerquantity direction of feed 1000pcs direction of product is fixed in a tray 1pin downloaded from: http:///
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 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 hms 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 rohms 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 (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient 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; if flow soldering met hod is preferred, 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 - ge rev.002 ? 2014 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 independent 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 rohms 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 our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative 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. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her damages arising from use of such information or data.: 2. 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 information contained in this document. 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 C we rev.001 ? 2014 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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