TDA7442D Datasheet | STMicroelectronics

DESCRIPTION The TDA7442/42D is volume tone (bass and treble) balance (Left/Right) processors for quality audio applications in TV and Hi-Fi systems. It reproduces surround sound by using a pro PIN CONNECTIONS SO28 SDIP32 ORDERING NUMBER: TDA7442D (SO28) TDA7442 (SDIP32) grammable phase shifter. Control of all the functions is acplished by serial bus. The AC signal setting is obtained by resistor networks and switches bined with operational amplifiers. Thanks to the BIPOLAR/CMOS Technology used, Low Distortion, Low Noise and DC stepping are obtained. R-IN2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D01AU1247 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 R-IN3 R-IN4 L-OUT R-OUT AGND VS CREF SDA SCL DIGGND TREBLE-R N.C. TREBLE-L PS1 LP BOUT(L) R_IN3 R_IN2 R_IN1 L_IN1 L_IN2 L_IN3 L_IN4 MUXOUTL IN(L) MUXOUT(R) IN(R) BIN(R) BOUT(R) BIN(L) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D98AU948 28 27 26 25 24 23 22 21 20 19 18 17 16 15 R_IN4 LOUT ROUT AGND VS CREF SDA SCL DIG-GND TREBLE(R) TREBLE(L) PS1 LP BOUT(L) R-IN1 MONITOR(L) MONITOR(R) L-IN1 L-IN2 L-IN3 L-IN4 MUXOUT(L) IN(L) MUXOUT(R) N.C. IN(R) BIN(R) BOUT(R) BIN(L) SO28 SDIP32 1/16 January 2001 TDA7442 - TDA7442D BLOCK DIAGRAM (TDA7442) 100n F 2.2µF 5.6n F 5.6K 100n F 100n F IN(L) MONITOR(L) 0.47µF L-IN1 50K 0.47µF L-IN2 50K 0.47µF L-IN3 50K 0.47µF L-IN4 50K 8 7 6 5 3 MUXOUT(L) 31.5d B control 9 PS1 19 RPS1 TREBLE-L 20 16 BIN(L) BOUT(L) 17 RB 30K PS1 90Hz OFF 79d B CONTROL VAR + FIX MIXING AMP TREBLE BASS 24 25 I2C BUS DECODER + LATCHES 23 SPKR ATT MUTE + + L+R SYMULATED MUSIC/ SYMULATED MUSIC SURR LOUT + 0.47µF R-IN1 50K 0.47µF R-IN2 50K 0.47µF R-IN3 50K 0.47µF R-IN4 50K 31 31.5d B control 4 MONITOR(R) 11 MUXOUT(R) 13 32 30K...