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TDA7449L Datasheet

  • TDA7449L

  • LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR

  • 13頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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廬
TDA7449L
LOW COST
DIGITALLY CONTROLLED AUDIO PROCESSOR
INPUT MULTIPLEXER
- 2 STEREO INPUTS
- SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
ONE STEREO OUTPUT
VOLUME CONTROL IN 1.0dB STEPS
TWO SPEAKER ATTENUATORS:
- TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
DESCRIPTION
The TDA7449L is a volume control and balance
(Left/Right) processor for quality audio applica-
tions in TV systems.
Selectable input gain is provided. Control of all
the functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
BLOCK DIAGRAM
MUXOUTL
8
100K
9
100K
G
VOLUME
10
DIP20
ORDERING NUMBER:
TDA7449L
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
L-IN1
L-IN2
SPKR ATT
LEFT
5
LOUT
19
R-IN1
7
100K
6
G
100K
VOLUME
SPKR ATT
RIGHT
V
REF
2
INPUT MULTIPLEXER
+ GAIN
11
MUXOUTR
SUPPLY
3
0/30dB
2dB STEP
I CBUS DECODER + LATCHES
2
20
18
SCL
SDA
DIG_GND
R-IN2
4
ROUT
V
S
AGND
1
CREF
D98AU868
April 1999
1/13

TDA7449L 產(chǎn)品屬性

  • 20

  • 集成電路 (IC)

  • 線性 - 音頻處理

  • -

  • 音頻處理器

  • TV

  • 通孔

  • 20-DIP（0.300"，7.62mm）

  • 20-DIP

  • 管件

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