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TDA7469 low voltage analog audio processor with headphone power amplifier product preview 2 stereo input 1 stereo output treble boost bass control bass automatic level control volume control in 1db steps mute stand-by function software con- trolled all function are programmable via serial bus description the TDA7469 is a volume tone (bass and treble) processor for quality audio applications in low voltage supply portable systems. bass alc (automatic level control) function can be adjusted by a dedicated pin. the control of all the functions is accomplished by serial bus. the ac signal setting is obtained by resistor net- works and switches combined with operational amplifiers. thanks to the used bipolar/cmos technology, low distortion, low noise and dc stepping are obtained. this is preliminary information on a new product now in development or undergoing evaluation. details are subject to change without notice. june 2001 ? in1-r alc in2-l 0.47 m f 0.47 m f supply supply supply v s gnd cref treble-l d00au1234 i 2 c bus decoder + latches scl sda pvs-l pgnd-l pgnd-r pvs-r out-l out-r 220 m f 22 m f treble-r mux_r mux_l rb rb bassi-r basso-r x1 x1 0.47 m f treble volume volume +6db 0db +6db -63db +6db 0db 3.3nf +6db -63db treble bass bass bass_alc control half_wave rectifier 25k 25k v ref gm 68nf 3.3nf 68nf 68nf 68nf 5.6k 5.6k 16 w or 32 w 16 w or 32 w 220 m f basso-l bassi-l in2-r 0.47 m f 25k 25k 25k 25k 25k 25k gm in1-l 0.47 m f block diagram TDA7469 (ssop24) ordering number: TDA7469 (ssop24) TDA7469d (so16) TDA7469a (so20) so20 so16 ssop24 1/17
in1-r alc 0.47 m f 0.47 m f supply supply supply v s gnd cref treble-l d01au1261 i 2 c bus decoder + latches scl sda pvs-l pgnd-l pgnd-r pvs-r out-l out-r 220 m f 22 m f treble-r rb rb bassi-r basso-r x1 x1 treble volume volume +6db 0db +6db -63db +6db 0db 3.3nf +6db -63db treble bass bass bass_alc control half_wave rectifier 25k 25k v ref gm 68nf 3.3nf 68nf 68nf 68nf 5.6k 5.6k 16 w or 32 w 16 w or 32 w 220 m f basso-l bassi-l 25k 25k gm in1-l 0.47 m f block diagram TDA7469a (so20) in1-r cmute in2-l 0.47 m f supply supply supply v s gnd cref d01au1262 i 2 c bus decoder + latches scl sda pvs-l pgnd-l pgnd-r pvs-r out-l out-r 220 m f 22 m f x1 x1 0.47 m f volume volume softmute +6db 0db +6db -63db +6db 0db +6db -63db 25k 25k v ref 16 w or 32 w 16 w or 32 w 220 m f in2-r 0.47 m f 0.47 m f 25k 25k 25k 25k 25k 25k in1-l 0.47 m f block diagram TDA7469d (so16) TDA7469 2/17
absolute maximum ratings symbol parameter value unit v s operating supply voltage 5.5 v t amb operating ambient temperature -10 to 85 c t stg storage temperature range -55 to 150 c thermal data symbol parameter value unit r th j-pin thermal resistance junction-pins 85 c/w pin connections quick reference data symbol parameter min. typ. max. unit v s supply voltage 1.8 2.4 5.0 v v ps power supply voltage 1.5 2.4 5.0 v p omax maximum output power 5 8 mw thd total harmonic distortion v = 0.1vrms f = 1khz 0.1 0.5 % volume control (1db step) -63 6 db treble control 0 12 db bass control 0 14 db mute attenuation 90 db vs in1-l in2-l pgnd-l out-l sda pvs-l scl gnd cmute out-r pvs-r pgnd-r in2-r in1-r cref 1 3 2 4 5 6 7 8 14 13 12 11 10 9 15 16 d00au1236 vs in1-l treble-l bassi-l basso-l out-l pgnd-l pvs-l sda alc pvs-r out-r basso-r pgnd-r bassi-r treble-r in1-r cref 1 3 2 4 5 6 7 8 9 18 17 16 15 14 12 13 11 19 10 20 scl gnd d00au1235 so16 so20 v s in1-l in2-l mux-l treble-l basso-l bassi-l pgnd-l out-l out-r pgnd-r basso-r treble-r bassi-r mux-r in2-r in1-r cref 1 3 2 4 5 6 7 8 9 22 21 20 19 18 16 17 15 23 10 24 pvs-l pvs-r d01au1246 sda alc 11 14 13 12 scl gnd sso24 TDA7469 3/17
electrical characteristics (refer to the test circuit t amb =25 c, v s =2.4v, all controls flat (g = 0db), f = 1khz, unless otherwise specified) symbol parameter test condition min. typ. max. unit supply v s supply voltage 1.8 2.4 5.0 v v ps supply voltage 1.5 2.4 5.0 v i sq supply current 10 m a i psq quiscent current 1 m a i s po = 0.5mw +0.5mw 8 ma i ps po = 0.5mw +0.5mw 15 ma input stage r in input resistance 35 50 65 k w a in input attenuation range 0 6 db volume control c range control range -63 6 db a max max. attenuation 61 63 65 db a step step resolution 0.5 1 1.5 db g max max. gain 6 db gstep step resolution 2 db r1 muxout load resistence 10 k w bass control gb control range max. boost/on 14 db r b internal feedback resistance 75.6 100.8 126 k w treble control gt control range max. boost 12 db rt internal resistance 25 k w headphone outputs gout output gain 0 db pomax max output power thd = 10% 5 8 mw general e no output noise outout muted all gains = 0db; bw = 20hz to 20khz flat 5 10 m v m v thd distortion av = 0, v in = 0.1v rms 0.1 0.5 % s c channel separation left/right 50 db rr1 ripple rejection v s , f = 100hz -70 db rr2 ripple rejection pvs, f = 100hz -75 db total tracking error 0 1 db bus inputs v il input low voltage 0.5 v v ih input high voltage 1.9 v i in input current v in = 0.4v -5 5 m a v o output voltage (ack) i o = 1.6ma 0.4 v note1: 1) bass and treble response: the center frequency and the response quality can be chosen by the external circuitry. TDA7469 4/17
data bytes address = (hex) 10001000 function selection: the first byte (subaddress) msb lsb subaddress d7 d6 d5 d4 d3 d2 d1 d0 xxxb 0000 volume xxxb 0001 treble & bass xxxb 0010 input & mute xxxb 0011 stand-by & others xxxb 0100 bass alc xxxb 0101 bass alc b = 1 incremental bus; active b = 0 no incremental bus; x = indifferent 0,1 msb lsb volume d7 d6 d5 d4 d3 d2 d1 d0 gain 00 6 01 4 10 2 11 0 1 db steps 000 0 001 -1 010 -2 011 -3 100 -4 101 -5 110 -6 111 -7 8 db steps 000 0 001 -8 010 -16 011 -24 100 -32 101 -40 110 -48 111 -56 volume : +6 x -63db volume TDA7469 5/17
treble & bass msb lsb d7 d6 d5 d4 d3 d2 d1 d0 treble 0 0 12db 0 1 8db 1 0 4db 1 1 0db bass 0 0 0 14db 0 0 1 12db 0 1 0 10db 011 8db 100 6db 101 4db 110 2db 111 0db bass alc 0 alc: volume mode 1 alc: bass mode 1 alc: fc shift 0 alc: fc nonshift 1 alc: feedback gain x2 0 alc: feedback gain x 1 msb lsb d7 d6 d5 d4 d3 d2 d1 d0 input select 0 0 in1 (0db) 0 1 in1 (-6db) 1 0 in2 (0db) 1 1 in2 (-6dbb) mute 1 input mute on 0 input mute off 1 output softmute on 0 output softmute off 1 output mute on 0 output mute off headphone amp. stand-by 1 headphone amp. off 0 headphone amp. on input select & mute TDA7469 6/17
stand_by & others msb lsb d7 d6 d5 d4 d3 d2 d1 d0 stand-by 1 all circuits stop 0 all circuits work soft mute capacitor 1 independent capacitor 0 share alc capacitor reference level 1 adaptive: (vdd-0.7)/2 0 0 0 1.10v 0 1 0 0.85v 1 0 0 0.55v 1 1 0 0.45v zerocross mode 1on 0 off 1 zerocross detect point: volume 0 zerocross detect point: bass cref stand-by 1 cref circuit stop 0 cref circuit work bass alc msb lsb bass alc d7 d6 d5 d4 d3 d2 d1 d0 alc mode 1on 0 off detector 1on 0 off release current circuit 1on 0 off attack time resistor 0 0 12.5k w 0 1 25k w 1 0 50k w 1 1 100k w threshold 0 0 threshold1 0 1 threshold2 1 0 threshold3 1 1 threshold4 bass alc msb lsb bass alc d7 d6 d5 d4 d3 d2 d1 d0 alc full feedback current 1on 0 off big release current 1on 0 off TDA7469 7/17
1 vs 2 in1-l 3 in2-l vs 4 mux-l 5 treble-l mux-l 10 pvs-l pvs-l 11 sda sda v dd 12 14 13 9 scl out-l gnd alc out-r scl out-l in1-l 0.1 m f 0.47 m f in1-l 0.47 m f 10k 5.6k 4.7 16 32 10 m f 3.3nf 68nf 68nf 0.1 m f 100pf for electrical measurements 1nf 0.1 m f 220 m f 220 m f 10 m f 24 cref 23 in1-r 22 in2-r in1-l 22 m f 0.47 m f in1-l 0.47 m f 21 mux-r 20 treble-r mux-r 10k 3.3nf 6 bassi-l basso-l pgnd-l 0.47 m f 7 5.6k 68nf 68nf 19 bassi-r basso-r 18 8 15 pvs-r pgnd-r pvs-r 0.1 m f10 m f 17 16 out-r 4.7 16 32 100pf 1nf 0.1 m f jumper stereo mini jac jumper for listering tests d00au1243 typical application circuit (sso24) TDA7469 8/17
1 2 3 4 v s in1l in1-l gnd in2l sda cmute scl gnd c2 0.1 m f c9 0.47 m f c3 0.47 m f c4 0.47 m f v s (a) v s (a) v s (b) c1 10 m f 35v c8 0.1 m f c7 10 m f 35v v s v s v s pgndl 6 pvsl 2 1 3 2 4 sda scl dgnd v s 1 7 8 10 r3 1k r2 1k r4 30 13 d01au1249 in2-l pgndr outr c12 0.1 m f r5 4.7 c13 220 m f 10v 12 out-r out-r/l in2r c14 0.47 m f 14 in2-r in1r c15 0.47 m f 15 in1-r cref c16 22 m f 10v 16 outl c6 0.1 m f r1 4.7 c5 220 m f 10v 5 out-l v s (b) v s c10 0.1 m f c11 10 m f 35v 11 pvsr 9 i2c typical application circuit (so16) 1 2 3 6 v s in1l in1-l gnd treblel alc scl gnd c2 0.1 m f c12 0.47 m f c3 0.47 m f c5 3.3nf v s (a) v s (a) v s (b) c1 10 m f 35v c11 0.1 m f c10 10 m f 35v v s v s v s pgndl 8 pvsl 2 1 3 2 4 sda scl dgnd v s 1 10 12 r4 1k r3 1k r1 5.6k r5 30 15 d01au1250 4 bassil c6 68nf 5 bassol c7 68nf pgndr outr c16 0.1 m f r6 4.7 100k c15 220 m f 10v 14 out-r out-r/l in1r c21 0.47 m f 19 in1-r cref c22 22 m f 10v 20 outl c9 0.1 m f r2 4.7 220 m f 10v c8 7 out-l v s (b) v s c13 0.1 m f c14 10 m f 35v 13 pvsr 11 sda 9 v s 100k v s i2c 18 r7 5.6k 17 bassir trebler c18 68nf c19 3.3nf 16 bassor c17 68nf typical application circuit (so20) TDA7469 9/17
0.001 10 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 5m 35m 10m 15m 20m 25m 30m vcc=2.8v rload=16ohm f=1khz thd(%) pout( w) thd+noise vs amplitude @vcc 2.8v, rload 16 w 0.001 10 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 5m 30m 10m 15m 20m 25m vcc=2.8v r load=32ohm f=1khz thd(%) pout( w ) thd+noise vs amplitude @vcc 2.8v, rload 32 w 0.001 10 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 5m 30m 10m 15m 20m 25m vcc=2.5v rload=16ohm f=1khz thd(%) pout( w ) thd+noise vs amplitude @vcc 2.5v, rload 16 w 0.001 10 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 2m 20m 4m 6m 8m 10m 12m 14m 16m 18m vcc=2.5v rload=32ohm f=1khz thd(%) pout( w) thd+noise vs amplitude @vcc 2.5v, rload 32 w TDA7469 10/17
TDA7469a components layout TDA7469a p.c. board layout (top view) TDA7469 11/17
TDA7469a p. c. board (backside view) TDA7469d components layout TDA7469 12/17
TDA7469d p. c. board (top view) TDA7469d p. c. board (backside view) TDA7469 13/17
outline and mechanical data dim. mm inch min. typ. max. min. typ. max. a 2.00 0.079 a1 0.05 0.002 a2 1.65 1.75 1.85 0.060 0.079 b (2) 0.22 0.38 0.009 0.015 c 0.09 0.25 0.003 0.01 d (1) 7.9 8.2 8.5 0.31 0.32 0.33 e 7.4 7.8 8.2 0.29 0.30 0.32 e1 (1) 5.0 5.3 5.6 0.20 0.21 0.22 e 0.65 0.025 l 0.55 0.75 0.95 0.022 0.029 0.004 l1 1.25 0.05 k0 (min), 4 (typ), 8 (max) ddd 0.1 0.004 (1) ad and e1o dimensions do not include mold flash or protu- sions, but do include mold mismatch and are mesaured at datum plane a ho . mold flash or protusions shall not exceed 0.20mm in total (both side). (2) abo dimension does not include dambar protusion/intrusion. sso24 0053237 be a2 a 112 13 24 d l l1 e1 c e k sso24me seating plane c a1 ddd c 0.25mm gage plane datum plane h shrink small outline package TDA7469 14/17
11 0 11 20 a e b d e l k h a1 c so20mec hx45 so20 dim. mm inch min. typ. max. min. typ. max. a 2.35 2.65 0.093 0.104 a1 0.1 0.3 0.004 0.012 b 0.33 0.51 0.013 0.020 c 0.23 0.32 0.009 0.013 d 12.6 13 0.496 0.512 e 7.4 7.6 0.291 0.299 e 1.27 0.050 h 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 l 0.4 1.27 0.016 0.050 k0 (min.)8 (max.) outline and mechanical data TDA7469 15/17
dim. mm inch min. typ. max. min. typ. max. a 2.35 2.65 0.093 0.104 a1 0.1 0.3 0.004 0.012 b 0.33 0.51 0.013 0.020 c 0.23 0.32 0.009 0.013 d 10.1 10.5 0.398 0.413 e 7.4 7.6 0.291 0.299 e 1.27 0.050 h 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 l 0.4 1.27 0.016 0.050 k0 (min.)8 (max.) hx 45 a e b d e a1 h l c k 16 1 8 9 so16 wide outline and mechanical data TDA7469 16/17
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specification mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics printed in italy all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states. http://www.st.com TDA7469 17/17

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