TDA7309

TDA7309 DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS INPUT MULTIPLEXER: 3 STEREO INPUTS RECORD OUTPUT FUNCTION LOUDNESS FUNCTION VOLUME CONTROL IN 1dB STEPS INDEPENDENT LEFT AND RIGHT VOLUME CONTROL SOFT MUTE FUNCTION ALL FUNCTIONS PROGRAMMABLE VIA SERIAL I2C BUS DIP20 SO20 DESCRIPTION The TDA7309 is a control processor with independent left and right volume control for quality audio applications. Selectable external loudness and soft mute functions are provided. Control is accomplished by serial I2C bus microprocessor interface. The AC signal setting is obtained by resistor netBLOCK DIAGRAM ORDERING NUMBER: TDA7309 TDA7309D works and switches combined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and Low DC stepping are obtained. 100nF Recout(L) 3x 2.2µF 1 17 18 LEFT INPUTS 20 VOLUME + LOUDNESS MUTE 2 LOUD(L) 19 OUT LEFT INPUT SELECTOR 3x 2.2µF 14 13 RIGHT INPUTS 11 VOLUME + LOUDNESS SOFT MUTE SERIAL BUS DECODER + LATCHES 6 4 5 8 DIGGND SDA SCL ADDR CSM BUS 3 SUPPLY TDA7309 MUTE 15 CREF 10 Recout(R) 22µF 12 LOUD(R) 9 OUT RIGHT 16 VS 7 AGND D93AU045A 100nF September 1997 1/12 TDA7309 PIN CONNECTION (Top View) RecoutL OUTL CSM SDA SCL DGND GND ADD OUTR RecoutR 1 2 3 4 5 6 7 8 9 10 D94AU058A 20 19 18 17 16 15 14 13 12 11 IN3L LOUDL IN2L IN1L VS CREF IN1R IN2R LOUDR IN3R ABSOLUTE MAXIMUM RATINGS Symbol VS Tamb Tstg Operating Supply Voltage Operating Ambient Temperature Storage Temperature Rang...