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參數資料
型號: TPA0252PWPRG4
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: 5/34頁
文件大小: 851K
代理商: TPA0252PWPRG4
www.ti.com
APPLICATION INFORMATION
Component Selection
ROUT+
13
R
MUX
RHPIN
RLINEIN
+
-
16
17
CIRHP
0.47
F
Right
Head-
phone
Input
Signal
CIRLINE
0.47
F
Right
Line
Input
Signal
CRIN
0.47
F
15
RIN
ROUT-
11
+
-
1 k
COUTR
330
F
100 k
L
MUX
LHPIN
LLINEIN
20
19
CILHP
0.47
F
Left
Head-
phone
Input
Signal
CILLINE
0.47
F
Left
Line
Input
Signal
CLIN
0.47
F
21
LIN
1 k
COUTL
330
F
VDD
100 k
Depop
Circuitry
Power
Management
PVDD
8
VDD
18
BYPASS
7
SHUT-
DOWN
5
GND
LOUT+
23
+
-
LOUT-
1
+
-
CBYP
0.47
F
12, 24
To
System
Control
CSR
0.1
F
VDD
CSR
0.1
F
VDD
See Note A
PC-
Beep
PC-BEEP
SE/BTL
10
CPCB
0.47
F
PC-BEEP
Input
Signal
4
Gain/
MUX
Control
UP
CLK
5
6
CCLK
47 nF
VDD
100 k
32-Step
Volume
Control
32-Step
Volume
Control
32-Step
Volume
Control
32-Step
Volume
Control
DOWN
22
Up
Down
100 k
HP/LINE
Gain
Memery
VAUX
9
0.47
F
VDD
System VAUX
14
TPA0252
SLOS288B – JUNE 2000 – REVISED SEPTEMBER 2004
Figure 30 and Figure 31 are schematic diagrams of typical notebook computer application circuits.
A.
A 0.47 F ceramic capacitor must be placed as close as possible to the IC. For filtering lower-frequency noise
signals, a larger electrolytic capacitor of 10 F or greater must be placed near the audio power amplifier.
Figure 30. Typical TPA0252 Application Circuit Using Single-Ended Inputs and Input MUX
13
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