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NJU72340A ? 1 ? ver 2.2e 8-channel electronic volume with input selector q general description q package outline the NJU72340A is a 8-channel electronic volume with input selector. it includes 8-in 2-out audio selector, rec output and multi-channel inputs. the NJU72340A performs low noise and low distortion characteristics with resistance ladder circuit. all of functions are controlled via two-wired serial bus. the NJU72340A is suitable for multi-channel audio system, such as av amplifier, dvd receiver, and others. q features o operating voltage 4.5 to 7.5v o 2-wired serial control o 8-input 2-output selector stereo : 7-input, monaural : 1-input o multi-channel input (8ch x 1) *lbch x2, rbch x2 o input selector gain control gain : 0,-5,-6,-7,-9,-11,-12,-13db o volume +31.5 ~ -95db/0.5dbstep, mute o cmos technology o package outline lqfp52-h3 q block diagram NJU72340Afh3 stereo lin (7) lout for adc stereo rin (7) input selector input selector rout for adc rec _r multi-r in multi-lin multi-c in multi-lbin multi-swin multi-rbin control logic lout rout cout rbout lbout swout ma i n vo l u m e : +31.5 to -95db/0.5db step dataclock multi-rsin rbout multi-lsin lsout rec _l input selector gain: 0,-5,-6,-7,-9,-11,-12,-13db mono in (1)
NJU72340A ? 2 ? q pin function no. symbol function no. symbol function 1 lout lch output 27 r4in ?input selector? rch input 4 2 rout rch output 28 l4in ?input selector? lch input 4 3 cout cch output 29 r5in ?input selector? rch input 5 4 lsout lsch output 30 l5in ?input selector? lch input 5 5 rsout rsch output 31 r6in ?input selector? rch input 6 6 lbout lbch output 32 l6in ?input selector? lch input 6 7 rbout rbch output 33 r7in ?input selector? rch input 7 8 swout swch output 34 l7in ?input selector? lch input 7 9 dcap_1 switching noise rejection capacitor 1 35 dcap_5 switching noise rejection capacitor 5 10 dcap_2 switching noise rejection capacitor 2 36 monoin monaural input selector 11 gnd ground 37 dcap_6 ?input selector? lch input 7 12 data control data signal input 38 adc_r rch output for adc 13 clock clock signal input 39 adc_l lch output for adc 14 dcap_3 switching noise rejection capacitor 3 40 gnd ground 15 rec_r ?input selector? rch rec output 41 lin multi-channel lch input 16 rec_l ?input selector? lch rec output 42 rin multi-channel rch input 17 gnd ground 43 cin multi-channel cch input 18 rb2in multi-channel rbch input 2 44 lsin multi-channel lsch input 19 lb2in multi-channel lbch input 2 45 rsin multi-channel rsch input 20 r1in ?input selector? rch input 1 46 lbin multi-channel lbch input 21 l1in ?input selector? lch input 1 47 rbin multi-channel rbch input 22 r2in ?input selector? rch input 2 48 swin multi-channel swch input 23 l2in ?input selector? lch input 2 49 v- power supply (-) 24 r3in ?input selector? rch input 3 50 v+ power supply (+) 25 l3in ?input selector? lch input 3 51 dcap_7 switching noise rejection capacitor 7 26 dcap_4 switching noise rejection capacitor 4 52 dcap_8 switching noise rejection capacitor 8 1 2 3 4 5 6 7 8 9 10 11 12 13 40 41 42 43 44 45 46 47 48 49 50 51 52 26 25 24 23 22 21 20 19 18 17 16 15 14 39 38 37 36 35 34 33 32 31 30 29 28 27
NJU72340A ? 3 ? q absolute maximum rating (ta=25 c) parameter symbol rating unit power supply voltage v + /v - +8/-8 v maximum input voltage v im v + /v - v power dissipation p d 1800 note: eia/jedec standard test board (76.2x114.3x1.6mm, 2layer, fr-4) mounting mw operating temperature ra nge topr -40 to +85 c storage temperature range tstg -40 to +125 c q electrical characteristics (ta=25 c, v + /v - = 7v, rl=47k ? , volume=0db) parameter symbol test condition min. typ. max. unit x power supply operating voltage v + /v - 4.5 7.0 7.5 v supply current 1 i cc no signal - 12 25 ma supply current 2 i ee no signal - 12 25 ma x input/output characteristics (output) maximum output voltage v om f=1khz, thd=1% volume=0db 3.6 4.2 - vrms maximum input voltage v im f=1khz, thd=1% volume=-20db 4.7 - - vrms voltage gain 1 g v1 v in =2vrms, f=1khz volume=0db -0.5 0 +0.5 db voltage gain 2 g v2 v in =100mvrms, f=1khz volume=+15db +14 +15 +16 db voltage gain error ? g v v in =2vrms, f=1khz volume=0db -0.5 0 0.5 db maximum attenuation a tt f=1khz, v in =2vrms volume=mute, a-weight - -120 - db attenuation error ? a tt f=1khz, v in =2vrms volume=-60db -1 0 1 db output noise1 v no1 volume=0db, rg=0, a-weight - -117 (1.41 ) -104 (6.3 ) dbv (vrms) output noise2 v no2 volume=-95db, rg=0, a-weight - -117 (1.41 ) -104 (6.3 ) dbv (vrms) total harmonic distortion 1 t.h.d.1 f=1khz,v in =1vrms, volume=0db,bw=400hz-30khz - 0.0004 0.01 % total harmonic distortion 2 t.h.d.2 f=10khz,v in =1vrms, volume=0db, bw=400hz -30khz - 0.0008 - % cross talk 1 ct1 f=1khz,v in =2vrms,a-weight volume=0db, rg=0 ? - -120 - db cross talk 2 ct2 f=20khz, v in =2vrms, volume=0db, rg=0 ? - -100 - db channel separation 1 cs1 f=1khz, v in =2vrms,a-weight volume=0db, rg=0 ? - -115 -80 db channel separation 2 cs2 f=20khz, v in =2vrms, volume=0db, rg=0 ? - -90 - db
NJU72340A ? 4 ? q electrical characteristics (ta=25 c, v + /v - = 7v, rl=47k ? , volume=0db) parameter symbol test condition min. typ. max. unit x input/output characteristics (rec output) rec out voltage gain g vrec v in =2vrms, f=1khz -0.5 0 0.5 db rec out output noise v norec rg=0 ? , a-weight - -114 (2 ) - dbv (vrms) rec out total harmonic distortion t. h . d rec f=1khz, v in =1vrms, bw=400hz-30khz - 0.0003 0.05 % rec out maximum attenuation a ttrec f=1khz, v in =2vrms rec out=mute, a-weight - -120 - db x input selector gain control characteristics input selector gain control voltage gain 1 g vinc1 f=1khz, v in =2vrms, input selector gain = 0db -1.0 0 +1.0 db input selector gain control voltage gain 2 g vinc2 f=1khz, v in =2vrms, input selector gain = -6db -7.0 -6.0 -5.0 db input selector gain control voltage gain 3 g vinc3 f=1khz, v in =2vrms, input selector gain = -12db -13.0 -12.0 -11.0 db x logic control characteristics high level input voltage v ih data, clock terminal input 2.5 - v + v low level input voltage v il data, clock terminal input 0 - 1.0 v
NJU72340A ? 5 ? q application circuit note.) when switching rec(rec output) and rec selector, use mute for rec_l pin and rec_r pin on the set. when switching input g ain and input selector, use mute for adc_l pin and adc_r pin on the set. + 10f c19 l2in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 39 38 37 36 35 34 33 32 31 29 28 27 52 51 50 49 48 47 46 45 44 43 42 41 40 + 10f c20 r3in + 10f c21 l3in lout rout cout lsout rsout lbout rbout swout gnd dcap_1 dcap_2 gn d lin + c1 10f + c2 10f + c3 + c4 10f + c5 10f + c6 10f + c7 10f + c8 10f + c9 100f + c10 100f 10f c36 + 10f 21 22 23 24 25 26 + 10f c18 r2in 30 control logic dcap_7 100f c46 + dcap_8 100f c47 + + 10f c17 l1in + 10f c16 r1in + 100f c11 dcap_3 + c23 + c24 10f 10f r4in l4in data jp1 jp2 clock + 10f c15 lb2in + 10f c14 rb2in + 10f c13 rec_r + 10f c12 rec_l gn d + 100f c22 dcap_4 + c25 + c26 10f 10f r5in l5in + c27 + c28 10f 10f r6in l6in + c29 + c30 10f 10f r7in l7in + c31 100f dcap_5 + c32 10f mo no in + c33 100f dcap_6 adc_r + c34 10f adc_l + c35 10f rin 10f c37 + cin 10f c38 + lsin 10f c39 + rsin 10f c40 + lbin 10f c41 + rbin 10f c42 + swin 10f c43 + c45 + 100f c44 100f + v+ v- lch selecotr 1 lch selecotr 2 rch selecotr 1 rc h selec otr 2
NJU72340A ? 6 ? ? timing on the 2-wire bus (data, clock) note.) set clock in low to prevent incorrect operation during a standby period ? characteristics of i/o stages for 2-wire bus (data, clock) parameter symbol min. typ. max. unit t hd_sta hold time (repeated) start condition. 4 - - s t low low period of the scl clock 2 - - s t high high period of the scl clock 2 - - s t su_sta set-up time for a repeated start condition 2 s t hd_dat data hold time 300 - - ns t su_dat data set-up time 200 ns t su_sto set-up time for stop condition 2 - - s t buf bus free time between a stop and start condition 4 s clock da ta t hd:st a t low t hd:dat t su:dat t high t su:sta t su:sto t buf
NJU72340A ? 7 ? ? definition of 2-wire register note) please don't send except specified data for avoiding an incorrect operation. x 2-wire bus format msb lsb msb lsb msb lsb s chip address 1 select address 1 data 1 p 1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit s: starting term p: ending term x chip address msb lsb 1 0 0 0 1 0 0 0 x select address the select address sets each function (volume, input gain, input selector, multi selector, other settings). the auto increment function cycles the select address as follows. 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0ah 00h msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 00h lch volume 01h rch volume 02h cch volume 03h lsch volume 04h rsch volume 05h lbch volume 06h rbch volume 07h swch volume 08h input gain rec input selector 09h rec selector cch selector swch selector lsch selector rsch selector 0ah lch selector rch selector lbch selector rbch selector ? control register default value msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 00h 0 0 0 0 0 0 0 0 01h 0 0 0 0 0 0 0 0 02h 0 0 0 0 0 0 0 0 03h 0 0 0 0 0 0 0 0 04h 0 0 0 0 0 0 0 0 05h 0 0 0 0 0 0 0 0 06h 0 0 0 0 0 0 0 0 07h 0 0 0 0 0 0 0 0 08h 0 0 0 0 0 0 0 0 09h 0 0 0 0 0 0 0 0 0ah 0 0 0 0 0 0 0 0 note.) this product starts up by mute setting in powe r ?on?. use it after removing mute of each setting. if any audio signal is inputted in input signal terminal before power ?on?, it may cause initial condition abnormality. in conditions of use such as the above, it prev ents that abnormality by setting mute before power ?off"
NJU72340A ? 8 ? ? definition of resistor x volume control : +31.5db to -95db / 0.5dbstep. msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 00h lch volume 01h rch volume 02h cch volume 03h lsch volume 04h rsch volume 05h lbch volume 06h rbch volume 07h swch volume < volume control data > data d7 d6 d5 d4 d3 d2 d1 d0 setting 0 0 0 0 0 0 0 0 mute ( 7 ) 0 0 0 0 0 0 0 1 +31.5db 0 0 0 0 0 0 1 0 +31.0db 0 0 0 0 0 0 1 1 +30.5db 0 0 0 0 0 1 0 0 +30.0db 0 0 0 0 0 1 0 1 +29.5db 0 0 0 0 0 1 1 0 +29.0db 0 0 0 0 0 1 1 1 +28.5db 0 0 0 0 1 0 0 0 +28.0db ? ? 0 0 1 1 1 0 0 0 +4.0db 0 0 1 1 1 0 0 1 +3.5db 0 0 1 1 1 0 1 0 +3.0db 0 0 1 1 1 0 1 1 +2.5db 0 0 1 1 1 1 0 0 +2.0db 0 0 1 1 1 1 0 1 +1.5db 0 0 1 1 1 1 1 0 +1.0db 0 0 1 1 1 1 1 1 +0.5db 0 1 0 0 0 0 0 0 0db 0 1 0 0 0 0 0 1 -0.5db 0 1 0 0 0 0 1 0 -1.0db 0 1 0 0 0 0 1 1 -1.5db 0 1 0 0 0 1 0 0 -2.0db 0 1 0 0 0 1 0 1 -2.5db 0 1 0 0 0 1 1 0 -3.0db 0 1 0 0 0 1 1 1 -3.5db 0 1 0 0 1 0 0 0 -4.0db ? ? 1 1 1 1 0 0 1 0 -89.0db 1 1 1 1 0 0 1 1 -89.5db 1 1 1 1 0 1 0 0 -90.0db 1 1 1 1 0 1 0 1 -90.5db 1 1 1 1 0 1 1 0 -91.0db 1 1 1 1 0 1 1 1 -91.5db 1 1 1 1 1 0 0 0 -92.0db 1 1 1 1 1 0 0 1 -92.5db 1 1 1 1 1 0 1 0 -93.0db 1 1 1 1 1 0 1 1 -93.5db 1 1 1 1 1 1 0 0 -94.0db 1 1 1 1 1 1 0 1 -94.5db 1 1 1 1 1 1 1 0 -95.0db 1 1 1 1 1 1 1 1 mute ( 7 ) initial setting
NJU72340A ? 9 ? x input gain : gain control for selected signal at the input selector. x rec : rec output on/off x input selector : selector for the monaural inpu t and stereo inputs from 1in to 8in msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 08h input gain rec input selector < input selector gain control data > data d7 d6 d5 setting 0 0 0 0db ( 7 ) 0 0 1 -5db 0 1 0 -6db 0 1 1 -7db 1 0 0 -9db 1 0 1 -11db 1 1 0 -12db 1 1 1 -13db data d4 setting 0 rec output off ( 7 ) 1 rec output on < input selector data > data d3 d2 d1 d0 setting 0 0 0 0 mute ( 7 ) 0 0 0 1 1in (2ch input 1) 0 0 1 0 2in (2ch input 2) 0 0 1 1 3in (2ch input 3) 0 1 0 0 4in (2ch input 4) 0 1 0 1 5in (2ch input 5) 0 1 1 0 6in (2ch input 6) 0 1 1 1 7in (2ch input 7) 1 0 0 0 monoin (2ch monoral input 1) ( 7 ) initial setting
NJU72340A ? 10 ? x rec selector : selector for the 2 channel input signal to rec output { x cch selector : cch multi-channel selector data x swch selector : swch multi-channel selector data x lsch selector : lsch multi-channel selector data x rsch selector : rsch multi-channel selector data msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 09h rec selector cch selector swch selector lsch selector rsch selector < rec selector data > data d7 d6 d5 d4 setting 0 0 0 0 mute ( 7 ) 0 0 0 1 1in (2ch input 1) 0 0 1 0 2in (2ch input 2) 0 0 1 1 3in (2ch input 3) 0 1 0 0 4in (2ch input 4) 0 1 0 1 5in (2ch input 5) 0 1 1 0 6in (2ch input 6) 0 1 1 1 7in (2ch input 7) 1 0 0 0 monoin (2ch monaural input 1) data d3 setting 0 mute ( 7 ) 1 multi-channel input data d2 setting 0 mute ( 7 ) 1 multi-channel input data d1 setting 0 mute ( 7 ) 1 multi-channel input data d0 setting 0 mute ( 7 ) 1 multi-channel input ( 7 ) initial setting
NJU72340A ? 11 ? x lch selector : lch multi-channel selector data x rch selector : rch multi-channel selector data x lbch selector : lbch multi-channel selector data x rbch selector : rbch multi-channel selector data msb lsb data select address d7 d6 d5 d4 d3 d2 d1 d0 0ah lch selector rch selector lbch selector rbch selector data d7 d6 setting 0 0 mute ( 7 ) 0 1 8-input 1 0 multi-channel input data d5 d4 setting 0 0 mute ( 7 ) 0 1 8-input 1 0 multi-channel input data d7 d6 setting 0 0 mute ( 7 ) 0 1 multi-channel input1 1 0 multi-channel input2 1 1 lch output data d7 d6 setting 0 0 mute ( 7 ) 0 1 multi-channel input1 1 0 multi-channel input2 1 1 rch output ( 7 ) initial setting
NJU72340A ? 12 ? ? typical characteristics icc vs supply voltage no signal 0 5 10 15 20 0246810 supply voltage [v] icc [ma] ta= 85c ta= 25c ta= -40c maximum output voltage vs frequency v =7v , thd=1% , i/o: lin- lout 4.0 4.5 5.0 10 100 1000 10000 100000 frequency [hz] maximum output voltage [vrms] ta= 25c ta= 85c ta= -40c iee vs supply voltage no signal 0 5 10 15 20 0246810 supply voltage [v] iee [ma] ta= 85c ta= 25c ta= -40c icc vs ambient temperature no signal 0 5 10 15 20 -50 0 50 100 150 ambient temperature [c] icc [ma] v= 4.5v v= 7v v= 7.5v iee vs ambient temperature no signal 0 5 10 15 20 -50 0 50 100 150 ambient temperature [c] iee [ma] v= 4.5v v= 7v v= 7.5v maximum output voltage vs supply voltage f =1khz , thd=1% , i/o: lin- lout 1 2 3 4 5 6 246810 supply voltage [v] maximum output voltage [vrms] ta= -40c ta= 25c ta= 85c
NJU72340A ? 13 ? ? typical characteristics volume gain output vs frequency v=7v, vin=2vrms(vol=0,-50,-95db, mute), vin=0.1vrms(vol=+15,+30db), bandpass, i/o: lin-lout -140 -120 -100 -80 -60 -40 -20 0 20 40 10 100 1000 10000 100000 frequency [hz] volume gain output [db] vol= +30db vol= +15db vol= 0db vol= -50db vol= mute vol= -95db thd+n vs input voltage v=7v, bw:10-22khz(f=20hz), 400-30khz(f=1khz), 400-80khz(f=20khz), i/o: lin-lout 0.0001 0.001 0.01 0.1 1 10 0.01 0.1 1 10 input voltage [vrms] thd+n [%] _ f=1khz f=20hz f=20khz thd+n vs input voltage v=7v, f=1khz, bw:400-30khz, i/o: lin-lout 0.0001 0.001 0.01 0.1 1 10 0.01 0.1 1 10 input voltage [vrms] thd+n [%] _ vol= -30db vol= -20db vol= -10db vol=0db thd+n vs frequency v=7v, vol=0db, bw:10-80khz, i/o: lin-lout 0.0001 0.001 0.01 0.1 1 10 10 100 1000 10000 100000 frequency [hz] thd+n [%] _ vin=2vrms vin=1vrm thd+n vs ambient temperature v=7v, vin=1vrms, f=1khz, bw:400-30khz, i/o: lin-lout 0.0001 0.001 0.01 0.1 1 10 -50 0 50 100 150 ambient temperature [c] thd+n [%] _ volume gain output vs volume setting v=7v, f=1khz, bandpass, i/o: lin-lout -96 -80 -64 -48 -32 -16 0 16 32 -96 -80 -64 -48 -32 -16 0 16 32 volume setting [db] volume gain output [db] ta= -40 ? , +25 ? , +85 ?
NJU72340A ? 14 ? ? typical characteristics [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -140 -120 -100 -80 -60 -40 -20 0 -50 0 50 100 150 ambient temperature [c] output noise voltage [dbv] output noise voltage vs ambient temperature v=7v, rg=0 ? , vol=0db, a-weighted lch output output voltage vs load resistance v=7v, f=1khz, vin=4.2vrms, vol=0db, 0 1 2 3 4 5 100 1000 10000 100000 load resistance [ ? ] output voltage [vrms] lch output channel separation vs frequency v=7v, vin=2vrms, vol=0db, bw:10-80khz, i/o: r1in- lout -120 -100 -80 -60 -40 10 100 1000 10000 100000 frequency [hz] channel separation [db] rg=0 ? rg=620 ? rg=3.3k ? rg=5.1k ? cross talk vs frequency v=7v, vin=2vrms, vol=0db, bw:10-80khz, i/o: l1in,l3in-lout, select channel:2ch -120 -100 -80 -60 -40 10 100 1000 10000 100000 frequency [hz] cross talk [db] rg=620 ? rg=3.3k ? rg=5.1k ? rg=0 ?

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