TDA7309
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 acplished by serial I2C bus microprocessor interface. The AC signal setting is obtained by resistor net BLOCK DIAGRAM
ORDERING NUMBER: TDA7309 TDA7309D works and switches bined with operational amplifiers. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and Low DC stepping are obtained.
100n F 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
SUPPLY
MUTE 15 CREF 10 Recout(R) 22µF 12 LOUD(R)
OUT RIGHT
16 VS
7 AGND
D93AU045A
100n F
September 1997
1/12
PIN CONNECTION (Top View)
Recout L OUTL CSM SDA SCL DGND GND ADD OUTR Recout R 1 2 3 4 5 6 7 8 9...
