DESCRIPTION
BLOCK DIAGRAM MUXOUTL L-IN1 4 100K 5 L-IN2 100K 6 100K 7 100K 0/30dB 2dB STEP 100K 2 100K 1 G VOLUME 8 INL 9 SO28 ORDERING NUMBER: TDA7440D Selectable input gain is provided. Control of all the functions is accomplished by serial bus. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and DC stepping are obtained TREBLE(L) 18 BIN(L) 14 RB BOUT(L) 15 L-IN3 TREBLE BASS SPKR ATT LEFT 27 LOUT L-IN4 21 I CBUS DECODER + LATCHES 2 SCL SDA DIG_GND R-IN1 3 22 20 R-IN2 G VOLUME TREBLE BASS SPKR ATT RIGHT VREF 26 ROUT R-IN3 100K 28 R-IN4 100K INPUT MULTIPLEXER + GAIN 10 MUXOUTR INR 11 19 TREBLE(R) 12 BIN(R) SUPPLY RB 13 BOUT(R) 23 CREF D98AU883 24 25 VS AGND April 1999 1/16 TDA7440D PIN CONNECTION (Top view) 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 D98AU884 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) N.C. N.C. BOUT(L) A...
STMicroelectronics
