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TDA7449 データシート(PDF) 1 Page - STMicroelectronics

部品番号 TDA7449
部品情報  Digital tone control audio processor
PDF  21 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7449 データシート(HTML) 1 Page - STMicroelectronics

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This is information on a product in full production.
September 2014
DocID006317 Rev 5
1/21
TDA7449
Digital tone control audio processor
Datasheet
- production data
Features
 Input multiplexer
– Two stereo inputs
– Selectable input gain for optimal adaptation
to different sources
 One stereo output
 Treble and bass control in 2.0 db steps
 Volume control in 1.0 db steps
 Two speaker attenuators:
– Two independent speaker controls in
1.0 db steps to facilitate balance
– Independent mute function
 All functions are programmable via serial bus
Description
The TDA7449 is a volume tone (bass and treble)
balance (left/right) processor for quality audio
applications in TV systems. Selectable input gain
is provided. A serial bus controls all functions.
The AC signal setting is obtained by resistor
networks and switches combined with operational
amplifiers.
Bipolar/CMOS technology used allows obtaining
low distortion, low noise and DC stepping.
Table 1. Device summary
Figure 1. Block diagram
SO20
Order code
Package
Packing
TDA7449D13TR
SO20
Tape and reel
0/30dB
2dB STEP
MUXOUTL
VOLUME
VOLUME
TREBLE
TREBLE
TREBLE(L)
BASS
BASS
MUXOUTR
TREBLE(R)
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D98AU847A
I
2CBUS DECODER + LATCHES
100K
100K
G
L-IN1
L-IN2
100K
100K
R-IN1
R-IN2
G
INPUT MULTIPLEXER
+ GAIN
BOUT(L)
SPKR ATT
RIGHT
BIN(R) BOUT(R)
SUPPLY
CREF
AGND
VS
BIN(L)
5
8
9
7
6
19
20
18
4
2
3
11
17
12
13
1
10
16
15
14
RB
RB
VREF
www.st.com
Obsolete
Product(s)
- Obsolete
Product(s)


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