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1/37 www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. sound processor series for car audio sound processors with built-in 3-band equalizer bd37531fv,bd37532fv,bd37533fv,bd37534fv description bd37531fv, bd37532fv, bd37533fv, bd37534fv are sound processors built-in 3-band equalizer for car audio. the functions are stereo input selector avail able to switch single end input and ground isolation input, input-gain control, main volume, loudness, 5ch fader volume, lpf for subwoo fer(except bd37531fv), mixing input(except bd37531fv, bd37532fv). moreover, ?advanced switch circuit?, that is ro hm original technology, can reduce various switching noise (ex. no-signal, low frequency likes 20hz & large signal input s). ?advanced switch? makes control of microcomputer easier, and can construct high quality car audio system. features 1) reduce switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness by using advanced switch circuit [possible to control all steps] 2) built-in differential input selector that can make various combination of single-ended / differential input. 3) built-in ground isolation amplifier i nputs, ideal for external stereo input. 4) built-in input gain controller reduces switchi ng noise for volume of a portable audio input. 5) decrease the number of external components by built-in 3-band equalizer filter, lpf for subwoofer (except bd37531fv), loudness filter. and, possible to control q, gv, fo of 3-band equalizer and fc of lpf, gv of loudness by i 2 c bus control freely 6) it is possible for the bass, middle, treble to the gain adjustment quantity of 20db and 1 db step gain adjustment. 7) terminals for the subwoofer outputs are equipped, and the audio signal outputs of front, back and subwoofer can be chosen with the i2c bus control. 8) built-in mixing input, mixing attenuator. (except bd37531fv, bd37532fv) 9) bi-cmos process is suitable for the design of low curr ent and low energy. and it provides more quality for small scale regulator and heat in a set. 10) package is ssop-b28. putting input-terminals together and output-terminals together can make pcb layout easier and can makes area of pcb smaller. 11) it is possible to control by 3.3v / 5v for i 2 c bus. applications it is the optimal for the car audio. besides, it is possible to use for the audio equipment of mini compo, micro compo, tv etc with all kinds. no.10085eat06
technical note 2/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. line up matrix ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
technical note 3/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. absolute maximum ratings (ta=25 ? operating conditions
technical note 4/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. ? ? block general ? ? ? ? input selector ? ? ? ??? input gain mute volume
technical note 5/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. block bass middle treble mixing (bd37533fv,bd37534fv) ? fader / subwoofer ? loudness level meter (bd37534fv) vp-9690a(average value detection, effective value display) filt er by matsushita communication is used for measurement. phase between input / output is same.
technical note 6/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. electrical characteristic curves (reference data) -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain[db] 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 vo u thd+n[%] vout [vrms] vin[vrms] -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain[db] 0 10 20 30 40 50 0246810 vcc[v] iq[ma] frequency [hz] frequency [hz] frequency [hz] -25 -20 -15 -10 -5 0 5 10 15 20 25 10 100 1k 10k 100k frequency [hz] gain[db] -5 -4 -3 -2 -1 0 1 2 3 4 5 10 100 1k 10k 100k fr equency ( hz) gai n ( db gain[db] frequency [hz] 10khz 1khz 100hz gain=0db bass gain : -20
technical note 7/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 1 10 100 1000 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 volume gain[db] j?R[uvrms] din-audio ihf-a -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k fr eq uency ( hz) gai n ( d b 0 0.5 1 1.5 2 2.5 3 3.5 00.511.522.53 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 treble gain [db] j?R [uvrms] din-audio ihf-a 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 bass gain [db] j?R [uvrms] din-audio ihf-a 1 10 100 1000 -20 -15 -10 -5 0 5 10 15 20 middle gain [db] j?R [uvrms] din-audio ihf-a 0.0 0.5 1.0 1.5 2.0 2.5 100 1000 10000 100000 ?[ohm] [vrms] j
technical note 8/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. block diagram and pin configuration terminal no. terminal name description terminal no. terminal 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 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 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:0db-79b/1db step no pop noise loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0. 75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise
technical note 9/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. terminal no. terminal name description terminal no. terminal 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 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:+15db-79b/1db step no pop noise lpf fc=55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0. 75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise
technical note 10/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. terminal no. terminal name description terminal no. terminal name description 1 a1 a input terminal of 1ch 15 mute external compulsory mute terminal 2 a2 a input terminal of 2ch 16 test1 test pin 3 b1 b input terminal of 1ch 17 test2 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 min mixing input terminal 28 fil vcc/2 terminal 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 att 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:+15db-79b/1db step no pop noise lpf fc=55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0. 75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise
technical note 11/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. terminal no. terminal name description terminal no. terminal name description 1 a1 a input terminal of 1ch 15 mute external compulsory mute terminal 2 a2 a input terminal of 2ch 16 lrst level meter reset terminal 3 b1 b input terminal of 1ch 17 lout output terminal for level meter 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 min mixing input terminal 28 fil vcc/2 terminal 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 att 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k level meter vcc i 2 c bus logic fader gain: +15db-79b/1db step no pop noise lpf fc= 55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0.7 5/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise
technical note 12/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. timming chart control signal specification () electrical specifications and timing for bus lines and i/o stages parameter symbol fast-mode i 2 c-bus unit min. max. 1 scl clock frequency scl 0 400 khz 2 bus free time between a stop and start condition tbuf 1.3 s 3 hold time (repeated) start condition. after this period, the fi rst clock pulse is generated thd;sta 0.6 s 4 low period of the scl clock tlow 1.3 s 5 high period of the scl clock thigh 0.6 s 6 set-up time for a repeated start condition tsu;sta 0.6 s 7 data hold time: thd;dat 0.06* s 8 data set-up time tsu;dat 120 ns 9 set-up time for stop condition tsu;sto 0.6 s 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;sta t su;sto t sp t hd;sta sr p
technical note 13/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. parameter symbol fast-mode devices unit min. max. 10 low level input voltage: vil -0.3 1 v 11 high level input voltage: vih 2.3 5 v 12 pulse width of spikes which must be suppressed by the input filter. tsp 0 50 ns 13 low level output voltage: at 3ma sink current vol1 0 0.4 v 14 input current each i/o pin with an input voltage between 0.4v and 4.5v. ii -10 10 a fig.27 a command timing example in the i2c data transmission buf 4us hd;sta 2us hd;dat 1us low 3us high 1us su;dat 1us su;sto 2us scl clock frequency250khz scl sda
technical note 14/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. i 2 c bus format msb lsb msb lsb msb lsb s slave address a select address a data a p 1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit s = start conditions (recognition of start bit) slave address = recognition of slave address. 7 bits in upper o rder are voluntary. the least significant bit is l due to writing. a = acknowledge bit (recognition of acknowledgement) select address = select every of volume, bass and treble. data = data on every volume and tone. p = stop condition (recognition of stop bit) i 2 c bus interface protocol 1basic form s slave address a select address a data a p msb lsb msb lsb msb lsb 2automatic increment (select address increases (+1) according to the 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 exampledata1 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. 3configuration unavailable for transmission (in this case, only 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 noteif any data is transmitted as select address 2 next to data, it is recognized as data, not as select address 2. slave address msb lsb a6 a5 a4 a3 a2 a1 a0 r/w 1 0 0 0 0 0 0 0 80h
technical note 15/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. select address & data bd37531fv 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 0 0 subwoofer output select 0 0 0 0 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 attenuation fader 2ch front 29 fader attenuation fader 1ch rear 2a fader attenuation fader 2ch rear 2b fader attenuation fader subwoofer 2c fader 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 0102030506 2028292a2b2c 30414447 51545775
technical note 16/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd37532fv 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 0102030506 2028292a2b2c 30414447 51545775
technical note 17/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd37533fv 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 /mixing 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 mixing 30 mixing gain / attenuation 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 0102030506 2028292a2b2c 30414447 51545775
technical note 18/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. bd37534fv 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 /mixing 0 1 advanced switch time of mute initial setup 2 02 lpf phase level meter reset 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 mixing 30 mixing gain / attenuation 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 0102030506 2028292a2b2c 30414447 51545775
technical note 19/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 /mixing 0 1 0 0 1.0msec 0 1 1.4msec 1 0 3.2msec 1 1 (mixing is available only bd37533fv, bd37534fv) time msb advanced switch time of input gain/volume/to ne/fader/loud ness/mixing 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 (mixing is available only bd37533fv, bd37534fv) 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 /mixing 0 1 advanced switch time of mute on 1 (mixing is available only bd37533fv, bd37534fv) select address 02(hex) fc msb subwoofer lpf fc lsb d7 d6 d5 d4 d3 d2 d1 d0 off lpf phase level meter reset 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 (available only bd37532fv, bd37533fv, bd37534fv) mode msb subwoofer output select lsb d7 d6 d5 d4 d3 d2 d1 d0 lpf lpf phase level meter reset 0 0 0 subwoofer lpf fc front 0 1 rear 1 0 prohibition 1 1 mode msb level meter reset lsb d7 d6 d5 d4 d3 d2 d1 d0 hold lpf phase 0 subwoofer output select 0 subwoofer lpf fc reset 1 (available only bd37534fv) phase msb lpf phase lsb d7 d6 d5 d4 d3 d2 d1 d0 0 0 level meter reset subwoofer output select 0 subwoofer lpf fc 180 1 (available only bd37532fv, bd37533fv, bd37534fv) : initial condition
technical note 20/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 select address 05(hex) mode msb input selector lsb outf1 outf2 d7 d6 d5 d4 d3 d2 d1 d0 a a1 a2 full-di ff 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 terminal is lowered from 100k(typ) to 6 k(typ). (for quick charge of coupling capacitor) mode msb full-diff bias type select lsb d7 d6 d5 d4 d3 d2 d1 d0 negative input 0 0 0 0 input selector bias 1 : initial condition negative input type for ground C isolation type) bias type for differential amplifier type
technical note 21/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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
technical note 22/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 (about bd37531fv, only 0db-db are available) select address 30(hex) gain & att msb mixing 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 1 0 0 0 7db 0 1 1 1 1 0 0 1 6db 0 1 1 1 1 0 1 0 5db 0 1 1 1 1 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 mix off 1 1 1 1 1 1 1 1 (available only bd37533fv, bd37534fv) : initial condition
technical note 23/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 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 : initial condition
technical note 24/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. select 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
technical note 25/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 : initial condition about power on reset at on of supply voltage circuit made initialization inside ic is built-in. please send data to all address as initial data at supply voltage on. and please supply mute at set side until this initial data is sent. item symbol limit unit condition min. typ. max. rise time of vcc trise 33 usec vcc rise time from 0v to 5v vcc voltage of release power on reset vpor 4.1 v about external compulsory mute terminal mute is possible forcibly than the outside after input again department, by the setting of the mute terminal. mute voltage condition mode gnd1.0v mute on 2.3vvcc mute off establish the voltage of mute in the condition to have been defined.
technical note 26/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. volume / fader volume / mixing attenuation of the details (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 about bd37531fv, fader volume only 0db-db are available. mixing is available only bd37533fv, bd37534fv. adjustable range is +7db-db. initial condition
technical note 27/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. about level meter(available only bd37534fv) the operation of circuit level meter is a function which gives dc voltage proportional to the size of signal of sound. it detects the peak level of signal and keeps the peak level, so that it is possible to monitor the size of signal by resetting dc voltage kept with suitable interval. the way to reset level meter output please send reset data through i 2 c bus when reset output of level metersend d6 = 1 of select address 02(hex). when cancel of output reset of level meter (hold) send d6 = 0 of select address 02(hex). the settings about period of reset peak hold operation will start after hold data is transmitted. set the wait time after hold data transmission according to the frequency bandwidth detected. wait time must be set to a minimum of one cycle over the detected frequency bandwidth. ex) detected frequency bandwidth is above 40hz, 40hz = 25ms = wait time transmission example by i 2 c bus
technical note 28/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. application circuit fig.28 bd37531fv notes on wiring please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to gnd. lines of gnd shall be one-point connected. wiring pattern of digital shall be away from that of analog unit and cross-talk shall not be acceptable. lines of scl and sda of i 2 c bus shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. lines of analog input shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. about test pin(14,16,17pin), please use with open. fil gnd sda scl mute 10 0.1 10 outf1 outf2 outr1 outr2 outs1 outs2 single1 single2 single3 gnd isolation1 or single4 full differential or single5, single6 gnd isolation2 gnd isolation3 single13gnd isolation2,3Q about single input 13, it is possible to change from single input to gnd isolation input 2,3. gnd isolation1, full differentialsingle46Q about gnd isolation1 and full differential, it is possible to change from differential input to single input 46. 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 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:0db-79b/1db step no pop noise loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0.75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise 10 test3 test2 test1 about single input 13, it is possible to change from single input to gnd isolation input 2,3. about gnd isolation1 and full differential, it is possible to change from differential input to single input 46.
technical note 29/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. fig.29 bd37532fv notes on wiring please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to gnd. lines of gnd shall be one-point connected. wiring pattern of digital shall be away from that of analog unit and cross-talk shall not be acceptable. lines of scl and sda of i 2 c bus shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. lines of analog input shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. about test pin(14,15,16pin), please use with open. 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:+15db-79b/1db step no pop noise lpf fc=55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0.75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise single1 single2 single3 gnd isolation1 or single4 full differential or single5, single6 gnd isolation2 gnd isolation3 single13gnd isolation2,3Q about single input 13, it is possible to change from single input to gnd isolation input 2,3. gnd isolation1, full differentialsingle46Q about gnd isolation1 and full differential, it is possible to change from differential input to single input 46. 10 test3 test2 test1 about single input 13, it is possible to change from single input to gnd isolation input 2,3. about gnd isolation1 and full differential, it is possible to change from differential input to single input 46.
technical note 30/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. fig.30 bd37533fv notes on wiring please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to gnd. lines of gnd shall be one-point connected. wiring pattern of digital shall be away from that of analog unit and cross-talk shall not be acceptable. lines of scl and sda of i 2 c bus shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. lines of analog input shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. about test pin(16,17pin), please use with open. fil gnd sda scl mute 10 0.1 10 outf1 outf2 outr1 outr2 outs1 outs2 min 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 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 att 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k vcc i 2 c bus logic fader gain:+15db-79b/1db step no pop noise lpf fc=55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0.75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise single1 single2 single3 gnd isolation1 or single4 full differential or single5, single6 gnd isolation2 gnd isolation3 single13gnd isolation2,3Q about single input 13, it is possible to change from single input to gnd isolation input 2,3. gnd isolation1, full differentialsingle46Q about gnd isolation1 and full differential, it is possible to change from differential input to single input 46. 10 test2 test1 about single input 13, it is possible to change from single input to gnd isolation input 2,3. about gnd isolation1 and full differential, it is possible to change from differential input to single input 46.
technical note 31/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. fil gnd sda scl mute 10 0.1 10 outf1 outf2 outr1 outr2 outs1 outs2 single1 single2 single3 min gnd isolation3 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 2.2 lout lrst 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 att 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 100k 100k 100k 100k 100k 100k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k gnd iso amp 250k 250k level meter vcc i 2 c bus logic fader gain:+15db-79b/1db step no pop noise lpf fc=55/85/120/160hz loudness gain:20db0b/1b step no pop noise ?0=250/400/800hz ?hicut1/2/3/4 3 band p-eq (tone control) gain+20db-20db/1db step no pop noise ?bassf0=60/80/100/120hz 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 ?treblef0=7.5k/10k/12.5k/15khz q=0.75/1.25 volume gain+15db-79db/1db step no pop noise input gain gain+20db0db/1db step no pop noise 10 fig.31 bd37534fv notes on wiring please connect the decoupling capacitor of a power supply in the shortest distance as much as possible to gnd. lines of gnd shall be one-point connected. wiring pattern of digital shall be away from that of analog unit and cross-talk shall not be acceptable. lines of scl and sda of i 2 c bus shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. lines of analog input shall not be parallel if possible. the lines shall be shielded, if they are adjacent to each other. about single input 13, it is possible to change from single input to gnd isolation input 2,3. about gnd isolation1 and full differential, it is possible to change from differential input to single input 46.
technical note 32/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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. 17 lout 03.3 a terminal for level meter output (bd37534fv) output impedance is 10k(typ). gn d vcc 100k gn d vcc 250 v cc gnd vcc gnd 1.65v 10k gnd vcc
technical note 33/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 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 precharge circuit and simple discharge circuit for an external capacitor are built in. 14 min 4.25 a terminal for signal input (bd37533fv, bd37534fv) the input impedance is 27k(typ). 14 16 17 test - test terminal (bd37531fv,bd37532fv,bd37533fv) about bd37531fv and bd37532fv, 14,16,17pin are test pin. about bd37533fv, 16,17pin are test pin. vcc gnd 1.65v vcc gnd 1.65v
technical note 34/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. notes for use 1. absolute maximum rating voltage when it impressed the voltage on vcc more than the absolute maximum rating voltage, circuit currents increase rapidly, and there is absolutely a case to reach characteristic deterioration and destruction of a device. in particular in a serge examination of a set, when it is expected the impressing serge at vcc terminal (24pin), please do not impress the large and over the absolute maximum rating voltage (including a operating voltage + serge ingredient (around 14v)). 2. about a signal input part 1about constant set up of input coupling capacitor in the signal input terminal, the constant setting of input coupling capacitor c(f) be sufficient input impedance r in () inside ic and please decide. the first hpf characteristic of rc is composed. 2) about the input selector short short mode is the command which makes switch s sh =on an input selector part and input impedance rin of all terminals, and makes resistance small. switch s sh is off when not choosing a short command. a constant time becomes small at the time of this command twisting to the resistance inside the capacitor connected outside and lsi. the charge time of a capacitor becomes short. since short mode turns on the switch of s sh and makes it low impedance, please use it at the time of a non-signal. 3. about mute terminal(15pin) when power supply is off any voltage shall not be supplied to mute terminal (15pin) when power-supply is off. please insert a resistor (about 2.2k) to mute terminal in series, if voltage is supplied to mute terminal in case. (please refer application circuit diagram.) 4. about test pin about test pin, please use with open. about bd37531fv and bd37532fv, 14,16,17pin are test pin. about bd37533fv, 16,17pin are test pin. 2 in) 2 in (2fcr1 )(2fcr a(f) ? ? ?
technical note 35/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. 5. about mixing (bd3753fv,bd37534fv) ?about specification of fader - at mixing on. mixed signal is added to main signal after fader gain(+15-79db) like the following figure. when fader is made a set up in -, the signal after a mixing signal is added is done with mute. because the - circuit of fader is in the step after the addition circuit. ?about advanced switching of mixing gain/att when advanced switching of mixing gain/att works, mixing becomes the switching movement that it passed through state of mixing off like b (a present s etup of mixin g gain/att mixing off a target setup of mixing gain/att). fig.32 about front fader and mixing fig.33 advanced switching movement when mixing gain/att is changed fader gain/att 0db -6db advanced switching mixing gain/att 0db -6db advanced switching
technical note 36/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. thermal derating curve ssop-b28 1.5 1.0 0.5 0.0 0 25 50 75 100 125 150 1.063w ambient temperature ta power dissipation pdw measurement condition: rohm standard board board size70701.6(?) materiala fr4 grass epoxy board (3% or less of copper foil area)
technical note 37/37 bd37531fv,bd37532fv, bd37533fv,bd37534fv www.rohm.com 2010.03 - rev.a ? 2010 rohm co., ltd. all rights reserved. ordering part number (unit : mm) ssop-b28 0.1 0.15 0.1 0.1 1.15 0.1 1 0.65 7.6 0.3 5.6 0.2 28 10 0.2 (max 10.35 include burr) 0.3min. 14 15 0.22 0.1 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs e2 () direction of feed reel 1pin
r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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