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TDA7309D013TR データシート(PDF) 1 Page - STMicroelectronics

部品番号 TDA7309D013TR
部品情報  DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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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
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
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


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