參數(shù)資料
型號: TPA0172PWPRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24
封裝: GREEN, PLASTIC, HTSSOP-24
文件頁數(shù): 4/36頁
文件大?。?/td> 885K
代理商: TPA0172PWPRG4
TPA0172
2W STEREO AUDIO POWER AMPLIFIER
WITH I2C BUS
SLOS327C AUGUST 2000 REVISED MAY 2001
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
selection of components
Figure 20 and Figure 21 are schematic diagrams of typical notebook computer application circuits.
ROUT+
12
R
MUX
RHPIN
RLINEIN
+
18
17
CIRHP
0.47
F
Right
Head
phone
Input
Signal
CIRLINE
0.47
F
Right
Line
Input
Signal
CRIN
0.47
F
9
RIN
ROUT
14
+
1 k
COUTR
330
F
100 k
L
MUX
LHPIN
LLINEIN
6
7
CILHP
0.47
F
Left
Head
phone
Input
Signal
CILLINE
0.47
F
Left
Line
Input
Signal
CLIN
0.47
F
5
LIN
1 k
COUTR
330
F
VDD
100 k
Depop
Circuitry
Power
Management
PVDD
19
VDD
20
BYPASS
21
SHUT-
DOWN
22
GND
LOUT+
2
+
LOUT
24
+
CBYP
0.47
F
1,13
To
System
Control
CSR
0.1
F
VDD
CSR
0.1
F
VDD
See Note A
PC-
Beep
PC-BEEP
3
CPCB
0.47
F
PC-BEEP
Input
Signal
MUX
Control
SE/BTL
11
PVDD
8
10
F
VDD
10
F
A0
4
A1
10
I2C
Control
SDA
SCL
I2CVDD
15
23
16
I2C Address
To I2C Bus
I2C Bus Voltage
64-Step
Volume
Control
64-Step
Volume
Control
NOTE A: A 0.1-
F ceramic capacitor should be placed as close as possible to the IC. For filtering lower-frequency noise signals, a larger
electrolytic capacitor of 10
F or greater should be placed near the audio power amplifier.
Figure 20. Typical TPA0172 Application Circuit Using Single-Ended Inputs and Input MUX
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