TDA7496 查看數據表（PDF） - STMicroelectronics
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TDA7496 Datasheet PDF : 13 Pages
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TDA7496SA
APPLICATION SUGGESTIONS
The recommended values of the external components are those shown on the application circuit of figure 1.
Different values can be used, the following table can help the designer.
COMPONENT
SUGGESTION
VALUE
PURPOSE
LARGER THAN
SUGGESTION
SMALLER THAN
SUGGESTION
R1
300K
Volume Control Circuit Larger volume regulation Smaller volume regulation
time
time
R2
10K
Mute time constant
Larger mute on/off time Smaller mute on/off time
P1
50K
Volume Control Circuit
C1
1000µF Supply voltage bypass
Danger of oscillation
C2
470nF
Input DC decoupling
Lower low frequency cutoff Higher low frequency cutoff
C3
470nF
Input DC decoupling
Lower low frequency cutoff Higher low frequency cutoff
C4
470µF
Ripple rejection
Better SVR
Worse SVR
C5
100nF
Volume control time
Larger volume regulation Smaller volume regulation
constant
time
time
C6
1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff
C7
1µF
Mute time constant
Larger mute on/off time Smaller mute on/off time
C8
1000µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff
C9
100nF
Supply voltage bypass
Danger of oscillation
Figure 1. Application Circui
+VS
C1
1000µF
PW_GND
11
1
INR
C2 470nF
30K
VAROUT_R
2
VS
13
VOLUME
+
-
OP AMP
S_GND
8
5
INL
C3 470nF
SVR 7
C4 470µF
VOLUME
30K
MUTE/STBY
PROTECTIONS
+
-
OP AMP
3
VOLUME
4
VAROUT_L
C5
100nF
R1 300K
TP1
VOL
P1
50K
LOG
C9
0.1µF
PW_GND
15
C8 1000µF
14
PW_GND
OUTR
S1 STBY
+5V
9
10
R2 10K
S_GND
C7
1µF
12
C6 1000µF
+5V
S2 MUTE
OUTL
PW_GND
+5V
D96AU493D
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