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TDA7448 Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce TDA7448
Description  6 CHANNEL VOLUME CONTROLLER
PDF  13 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7448 Fiches technique(HTML) 4 Page - STMicroelectronics

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Figure 1. Test circuit
APPLICATION SUGGESTIONS
The volume control range is 0 to -79dB, by 1dB step
resolution.
The very high resolution allows the implementation of
systems free from any noise acoustical effect.
CREF
The suggested 10
µF reference capacitor (CREF)
value can be reduced to 4.7
µF if the application re-
quires faster power ON.
Figure 2. THD vs. frequency
Figure 3. THD vs. RLOAD
Figure 4. Channel separation vs. frequency
VOLUME
VS
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
I
2
C BUS
DECODER
SUPPLY
2
IN1
0.47
µF
0.47
µF
0.47
µF
0.47
µF
0.47
µF
0.47
µF
10
µF
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
SDA
SCL
ADDR
D02AU1406
IN2
IN3
IN4
IN5
IN6
IN1
IN2
IN3
IN4
IN5
IN6
11
9
10
16
5
15
6
14
7
GND
CREF
19
3
18
4
17
11
20
1
50K
50K
50K
50K
50K
50K



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