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TDA7463D low voltage tone control digitally controlled audio processor 1 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 tda7463 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. may 2002 ? in-r alc in-l c1 0.47 m f c2 0.47 m f supply v s v s v s v s gnd cref treble-l d96au482b i 2 c bus decoder + latches scl i 2 c sda scl sda out-l out-r c7 22 m f c8 100nf c9 100 m f + treble-r rb rb bassi-r basso-r x1 x5 x1 x5 c3 0.47 m f c4 3.3nf c12 3.3nf r1 1m w r5 5.6k 100nf 100nf c6 100nf c5 100nf c11 c10 r2 5.6k r3 1k w treble -63db control -63db control treble bass bass bass_alc control half_wave rectifier 50k 50k v ref 0/-10db 0/-10db basso-l bassi-l r4 1k w v s dgnd 1 2 3 4 block diagram ordering number: TDA7463D so16 1/12
absolute maximum ratings symbol parameter value unit v s operating supply voltage 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 v s in-l treble-l bassi-l basso-l sda out-l scl 1 3 2 4 5 6 7 8 gnd cref basso-r out-r bassi-r treble-r in-r alc 16 15 14 13 12 10 11 9 d96au484 pin connection quick reference data symbol parameter min. typ. max. unit v s supply voltage 1.8 2.4 3 v v cl max. input signal handling 0.2 vrms thd total harmonic distortion v = 0.1vrms f = 1khz 0.1 % s/n signal to noise ratio v out = 0.1vrms (mode = off) 80 db s c channel separation f = 1khz 80 db volume control (1db step) -63 0 db -10db damping -10 0 db 14db 0 14 db treble control 0 8 db bass control 0 14 db mute attenuation 100 db TDA7463D 2/12
electrical characteristics (refer to the test circuit t amb = 25c, v s =2.4v, r l = 10k w , r g = 600 w , all controls flat, unless otherwise specified) symbol parameter test condition min. typ. max. unit supply v s supply voltage 1.8 2.4 3 v i s supply current 4 ma i st-by stand-by current 50 m a svr ripple rejection 70 db input stage r in input resistance 35 50 65 k w v cl clipping level thd = 0.3% 0.2 vrms volume control c range control range 63 db a v min min attenuation -1 0 1 db a vmax max. attenuation 62 63 64 db a step step resolution 1 db a mute mute attenuation 80 100 db a-10db -10db damping 10 db g14db 14db gain 14 db bass control (1) gb control range max. boost/on 14 db r b internal feedback resistance 33.75 45 56.25 k w treble control (1) gt control range max. boost on 8db audio outputs v clip clipping level d = 0.3% 0.2 v rms r l output load resistance 10 k w v dc dc voltage level 0.8 v general e no output noise outout muted all gains = 0db; bw = 20hz to 20khz flat 5 8 m v m v e t total tracking error 0 1 db s/n signal to noise ratio all gains 0db; v o = 0.1v rms ;80db s c channel separation left/right 80 db d distortion a v = 0; v i = 0.1v rms ; 0.1 % bus input 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 sda acknowledge 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. TDA7463D 3/12
data bytes address = (hex) 10001000 function selection: the first byte (subaddress) msb lsb subaddress d7 d6 d5 d4 d3 d2 d1 d0 xxb0000 stand-by & treble & others xxb0001 bass xxb0010volume b = 1 incremental bus; active b = 0 no incremental bus; x = indifferent 0,1 stand_by & treble & others msb lsb d7 d6 d5 d4 d3 d2 d1 d0 stand-by 1 all circuits stop treble 1 stand-by (treble block stops) 1 0 boost off 0 0 boost on 1 0 0 high boost (+8db) 0 0 0 low boost (+4db) mute 1 input mute on 0 input mute off 1 output mute on 0 output mute off bass 1 release current circuit on 0 release current circuit off input select 1 input 1 0 input 2 TDA7463D 4/12
msb lsb volume d7 d6 d5 d4 d3 d2 d1 d0 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 output gain 1 0db 0 +14db output attenuation 1 0db 0 -10db volume : 0 ~ -63db volume bass msb lsb bass d7 d6 d5 d4 d3 d2 d1 d0 1 stand-by (bass block stops) 1 bass (boost off) 0 bass (boost on) 1 0 high boost (ex. + 14db) 0 0 low boost (ex. + 6db) 1 alc mode off (alc block stops) 0 alc mode on 0 0 attack time resistor (12.5k w ) release current (0.4 m a) 0 1 attack time resistor (25k w ) release current (0.2 m a) 1 0 attack time resistor (50k w ) release current (0.1 m a) 1 1 attack time resistor (100k w ) release current (0.05 m a) 0 0 threshold1 (0.2vrms) 0 1 threshold2 (0.14vrms) 1 0 threshold3 (0.1vrms) 1 1 threshold4 (0.07vrms) TDA7463D 5/12
alc in general: volume setting with alc target volume [db] volume [db] output gain 0/+14db [db] output attenuation 0/-10db [db] 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 +14 0 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 00 -24 -25 -26 -27 : : -70 -71 -72 -73 -14 -15 -16 -17 : : -60 -61 -62 -63 0-10 TDA7463D 6/12
20 m a v s 50k vref d99au1106 gnd pin: in-l, in-r 10 w v s d99au1107 20 m a gnd pin: out-l, out-r 25k v s d99au1108 20 m a gnd pin: treble-l, treble-r d99au1109 gnd pin: scl, sda 45k v s d99au1110 20 m a basso-l,basso-r gnd pin: bassi-l, bassi-r 45k v s d99au1111 20 m a bassi-l,bassi-r gnd pin: basso-l, basso-r TDA7463D 7/12
100k v s d99au1112 20 m a gnd pin: alc 1k v s d99au1113 20 m a gnd pin: cref 0.01 0.1 v i (v rms ) 0.01 0.1 v o (v rms ) v s =1.8v; f=100hz; volume=-14db; output gain=+14db intern. release circuit=on bass boost with alc bass boost without alc bass= +14db boost threshold: 17db 14db flat 11db 8db d99au1115 bass alc: threshold curve 0.01 0.1 v i (v rms ) 0.001 0.01 0.1 1 10 thd (%) v s =1.8v; f=100hz; volume=-14db; output gain=+14db intern. release circuit=on bass boost with alc bass boost without alc flat threshold 17db 14db 11db 8db d99au1114 bass alc: thd TDA7463D 8/12
component layer solder layer pc board and components layout of the application & test circuit 60mm 65mm TDA7463D 9/12
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 k 0? (min.)8? (max.) h x 45 a e b d e a1 h l c k 16 1 8 9 so16 wide outline and mechanical data TDA7463D 10/12
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsib ility 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 pu blication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectron ics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicr oelectronics. the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics C printed in italy C all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malt a - morocco - singapore - spain - sweden - switzerland - united kingdom - united states. http://www.st.com TDA7463D 11/12

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