TDA7309D datasheet(1/14 Pages) STMICROELECTRONICS

Numer części	TDA7309D

Szczegółowy opis	DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS

PDF	14 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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TDA7309

March 2006

1FEATURES

■ 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

2

DESCRIPTION

The TDA7309 is a control processor with indepen-

dent 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 micro-

processor interface.

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 Low DC stepping

are obtained.

DIGITAL CONTROLLED STEREO AUDIO PROCESSOR

WITH LOUDNESS

Figure 2. Block Diagram

17

18

13

14

11

INPUT

SELECTOR

LEFT

INPUTS

RIGHT

INPUTS

SUPPLY

16

7

15

VOLUME +

LOUDNESS

SOFT

MUTE

19

LOUD(L)

22

µF

CREF

12

LOUD(R)

MUTE

6

4

5

8

9

2

OUT

LEFT

SCL

SDA

DIGGND

OUT

RIGHT

ADDR

D93AU045A

BUS

SERIAL BUS DECODER + LATCHES

20

3 x

2.2

µF

3 x

2.2

µF

VOLUME +

LOUDNESS

AGND

VS

3

CSM

100nF

TDA7309

10

Recout(R)

1

Recout(L)

Rev. 6

Figure 1. Packages

Table 1. Order Codes

Part Number

Package

TDA7309

DIP20

TDA7309D

SO20

TDA7309D013TR

Tape & Reel

DIP20

SO20

Podobny numer części - TDA7309D

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STMicroelectronics	TDA7309D	128Kb / 12P	DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS Sep-1997

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