Datasheet

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SLOS327C − AUGUST 2000 − REVISED MAY 2001
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
selection of components (continued)
C
RLINE−
0.47 µF
ROUT+ 12
R
MUX
RHPIN
RLINEIN
+
−
18
17
9 RIN
ROUT− 14
+
−
1 kΩ
C
OUTR
330 µF
100 kΩ
LHPIN
LLINEIN6
7
C
LLINE−
0.47 µF
Left
Positive
Differential
I
nput Signal
5 LIN
1 kΩ
C
OUTR
330 µF
V
DD
100 kΩ
Depop
Circuitry
Power
Management
PV
DD
19
V
DD
20
BYPASS 21
SHUT-
DOWN
22
GND
LOUT+ 2
+
−
LOUT− 24
+
−
C
BYP
0.47 µF
1,13
To
System
Control
C
SR
0.1 µF
V
DD
C
SR
0.1 µF
V
DD
See Note A
C
RIN+
0.47 µF
Right
Positive
Differential
I
nput Signal
Right
Negative
Differential
I
nput Signal
PC-
Beep
PC-BEEP
3
C
PCB
0.47 µF
PC-BEEP
Input Signal
MUX
Control
SE/BTL
11
PV
DD
8
10 µF
V
DD
10 µF
64-Step
Volume
Control
A0
15
A1
23
I
2
C
Control
SDA
SCL
I
2
CV
DD
4
10
16
I
2
C Address
To I
2
C Bus
I
2
C Bus Voltage
C
LIN+
0.47 µF
64-Step
Volume
Control
Left
Negative
D
ifferential
Input
Signal
C
RHP−
0.47 µF
L
MUX
C
LHP−
0.47 µF
NOTE A: A 0.1-µF ceramic capacitor should be placed as close as possible to the IC. For filtering lower-frequency noise signals, a larger
electrolytic capacitor of 10 µF or greater should be placed near the audio power amplifier.
Figure 21. Typical TPA0172 Application Circuit Using Differential Inputs