sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?1?of?9 block?diagram 6-ch?electronic?volume?controller description sc5358?is?a?6- channel?electronic?volume?controller?ic?mainly?designed for? the? current? multi-channel? av? systems.? it? provides? an? i 2 c? control interface,? a? selectable? address? and? an? attenuation? range? from? 0? to? ? 79db?at?1db/step. features *?cmos?technology *?i 2 c?bus?control?interface *?selectable?address *?attenuation?range:?0~-79db(1db/step) *?power?supply:?5~9v *?s/n>100db *?high?channel?separation applications *?5.1-channel?av?system *?computer?multi-media?system *?other?multi-channel?systems ordering?information part?no. package sc5358 dip-20-300-2.54 SC5358S? sop-20-375-1.27
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?2?of?9 absolute?maximum?ratings characteristics symbol ratings unit supply?voltage v cc 12 v operating?temperature t opr -20~+75 c storage?temperature t stg -40~+125 c input?voltage v i -0.3~v cc +0.3 v electrical?characteristics (vcc=9v vi=1vrms f=1khz temperature?t=27 ) characteristics symbol test?conditions min. typ. max. unit operating?voltage v cc ?- 4 9 12 v operating?current i cc v cc =9v v i =0v - 7.5 9 ma min.?attenuation - 0 - volume?attenuation?range aran max.?attenuation - 79 - db attention?step astep - - 1 - db attention?step?gain?error gerr? - - 0.5 - db interchannel?attenuation?gain error cerr - - 0.5 - db maximum?output?voltage v omax v cc =9v,=1khz,volume attenuation?0db load?resistor?is 50k w ,thd<1% 2.0 2.3 2.5 v rms v out =2vrms - 0.07 0.09 % total?harmonic?distortion thd f=1khz,volume attenuation 0db,load resistor?is?50k w v out =200mvrms - 0.003 0.005 % noise?output e no ?v in =gnd,volume?attenuation?0db. - 2 3 m v rms signal?to?noise?ratio snr v in =1vrms,volume?attenuation 0db 110 120 125 db channel?separation cs v in =2.5vrms,f=1khz,volume attenuation?0db 100 120 125 db mute?attenuation mute v in =2.5vrms,f=1khz,volume attenuation?0db. 90 95 97 db frequency?response fr v in =2.5vrms,volume?attenuation 0db thd<3% - 0.25 0.27? mhz input?impedance r in ? f=1khz - 48 - k w output?impedance r out ? f=1khz,v out =100mvrms - 100 - w i 2 c?bus?section?electrical?characteristics characteristics symbol conditions min. typ. max. unit bus?high?input?level v ih - 0.5 - - v cc bus?low?input?level v il - - - 0.2 v cc
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?3?of?9 pin?configuration pin?description pin?no. pin?name pin?description 1 in1 input?channel?1 2 in2 input?channel?2 3 in3 input?channel?3 4 a2 the?3rd?bit?of?address 5 dgnd "0" ? usually?connected?to?ground ? 6 scl i 2 c?clock?input 7 sda i 2 c?data?input 8 in4 input?channel?4 9 in5 input?channel?5 10 in6 input?channel?6 11 out6 output?channel?6 12 out5 output?channel?5 13 out4 output?channel?4 14 gnd ground 15 ref reference?voltage?output 16 v cc power?supply 17 a3 the?4th?bit?of?address 18 out3 output?channel?3 19 out2 output?channel?2 20 out1 output?channel?1
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?4?of?9 function?description 1.?i 2 c?bus?interface sc5358?is?connected?to?i 2 c?bus?via?the?scl?and?sda,?controlled?by?mcu. date?validity a?data?on?the?sda?line?must?be?stable?when?the?scl?line?is?high?state.?it?can?be?changed?only?when?the?scl line?is?low?state.?please?refer?to?the?figure?below. start?and?stop?conditions a? start? condition? is? activated? when? the? scl? is? high? state? and? the? sda? shifts? from? high? to? low? state.? a? stop condition? is? activated? when? the? scl?is? high? state? and?the? sda? shifts? from?low? to? high? state.? please? refer? to?the figure?below. sda scl start?condition stop?condition start?and?stop?conditions?are?generated?by?mcu.?the?buses?are?busy?after?a?start?condition?is?activated?and?are idle?after?a?while?when?a?stop?condition?is?activated. byte?format every?byte?transmitted?to?the?sda?line?consists?of?8?bits.? each?byte?must?be?followed?by?an?acknowledge?bit. the?msb?is?transmitted?first. during?the?9th?clock?pulse,?mcu?puts?a?resistive?high?level?on?the?sda?line?and?waits?for?acknowledge?signal. as?a?peripheral?sc5358?must? pull?down?the?sda?line?if?acknowledging,? or? else?keeps?high?state.? please?refer?to the?figure?below.
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?5?of?9 2.?control?of?sc5358 a?start?condition an?address?byte?including?acknowledge?bit n?data?bytes?including?acknowledge?bits a?stop?condition please?refer?to?the?figure?below. the?address?byte?of?sc5358?can?be?set?to?80h,?84h,?88h?or?8ch?through?the?4th?bit?a3?and?the?3rd?bit?a2. the?descriptions?of?data?bytes?are?as?follows. 8-bit?data msb lsb function 0 0 0 0 0 b2 b1 b0 channel?3 -10db/step 0 0 0 1 a3 a2 a1 a0 channel?3 -1db/step 0 0 1 0 0 b2 b1 b0 channel?4 -10db/step 0 0 1 1 a3 a2 a1 a0 channel?4 -1db/step 0 1 0 0 0 b2 b1 b0 channel?2 -10db/step 0 1 0 1 a3 a2 a1 a0 channel?2 -1db/step 0 1 1 0 0 b2 b1 b0 channel?5 -10db/step 0 1 1 1 a3 a2 a1 a0 channel?5 -1db/step 1 0 0 0 0 b2 b1 b0 channel?1 -10db/step 1 0 0 1 a3 a2 a1 a0 channel?1 -1db/step 1 0 1 0 0 b2 b1 b0 channel?6 -10db/step 1 0 1 1 a3 a2 a1 a0 channel?6 -1db/step 1 1 0 1 0 b2 b1 b0 all?channels -10db/step 1 1 1 0 a3 a2 a1 a0 all?channels -1db/step 1 1 1 1 1 0 0 1 all?channels mute low?4-bit?data a3 a2/b2 a1/b1 a0/b0 atten. ? db ? 0 0 0 0 0/0 0 0 0 1 1/10 0 0 1 0 2/20 0 0 1 1 3/30 0 1 0 0 4/40 0 1 0 1 5/50 0 1 1 0 6/60 0 1 1 1 7/70 1 0 0 0 8/ 1 0 0 1 9/ sc5358?has?no?default?setting,?so?it?must?be?initialized.
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?6?of?9 when?adjusting?the?volume?of?a?channel?both?a?10db?code?and?a?1db?code?must?be?send?just?as?follows. example ? the?setting?of?channel?5?is??-36db. start 1 0 0 0 1 0 0 0 ack 0 1 1 0 0 0 1 1 ack 0 1 1 1 0 1 1 0 ack stop ???????????????address=88h????????????????????????????????-30db????????????????????????????????????-6db start 1 0 0 0 1 0 0 0 ack 0 1 1 1 0 1 1 0 ack 0 1 1 0 0 0 1 1 ack stop ???????????????address=88h????????????????????????????????-6db??????????????????????????????????????-30db typical?application?circuit ?(address=88h) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 in 1 in 2 in 3 a2 dgnd scl sda in 4 in 5 in 6 out 6 out 5 out 4 gnd ref v cc a3 out 1 out 2 out 3 mcu 10 - f 10 - f 10 - f 100 k i 2 c?bus 10 - f 10 - f 10 - f 10 - f 10 - f 10 - f vo 1 10 - f 10 - f 10 - f 10 - f 100 k 100 k 100 k 100 k 100 k 100 k 100 k 100 k 100 k 100 k 100 k 0.1 - f 10 - f vo 2 vo 3 vo 4 vo 5 vo 6 vi 6 vi 5 vi 4 vi 3 vi 2 vi 1 v cc
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?7?of?9 package?outline dip-20-300-2.54 unit:?mm 2. 54 15?degree 0. 51 26 .40.3 1. 27 0. 51min sop-20-375-1.27 unit:?mm 1 0 . 2 0 . 4 7 . 6 0 . 3 9 . 5 2 5
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?8?of?9 handling?mos?devices: electrostatic?charges?can?exist?in?many?things.?all?of?our?mos?devices?are?internally?protected?against electrostatic?discharge?but?they?can?be?damaged?if?the?following?precautions?are?not?taken: persons?at?a?work?bench?should?be?earthed?via?a?wrist?strap. equipment?cases?should?be?earthed. ? all?tools?used?during?assembly,?including?soldering?tools?and?solder?baths,?must?be?earthed. mos?devices?should?be?packed?for?dispatch?in?antistatic/conductive?containers.
sc5358 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1??????2004.08.03 http:?www.silan.com.cn?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?9?of?9 attachment revision?history data rev description page 2004.03.10 1.0 original 2004.06.10 1.1 modify?the??electrical?characteristics? 3
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