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參數(shù)資料
| 型號(hào)： | TPA0112PWPR |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | AUDIO AMPLIFIER|DUAL|CMOS|TSSOP|24PIN|PLASTIC |
| 中文描述： | 音頻放大器|雙|的CMOS | TSSOP封裝| 24針|塑料 |
| 文件頁(yè)數(shù)： | 32/34頁(yè) |
| 文件大小： | 488K |
| 代理商： | TPA0112PWPR |
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TPA0112
2-W STEREO AUDIO POWER AMPLIFIER
WITH FOUR SELECTABLE GAIN SETTINGS
SLOS204B – MAY 1999 – REVISED MARCH 2000
32
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Input MUX operation
ROUT+
21
R
MUX
RHPIN
RLINEIN
+
–
23
20
CIRHP
0.47
μ
F
Right
Headphone
Input
Signal
CIRLINE
0.47
μ
F
Right Line
Input
Signal
CRIN
0.47
μ
F
8
RIN
ROUT–
16
+
–
Figure 48. TPA0112 Example Input MUX Circuit
Another advantage of using the MUX feature is setting the gain of the headphone channel to –1. This provides
the optimum distortion performance into the headphones where clear sound is more important. Refer to the
SE/BTL operation section for a description of the headphone jack control circuit.
shutdown modes
The TPA0112 employs a shutdown mode of operation designed to reduce supply current, I
DD
, to the absolute
minimum level during periods of nonuse for battery-power conservation. The SHUTDOWN input terminal
should be held high during normal operation when the amplifier is in use. Pulling SHUTDOWN low causes the
outputs to mute and the amplifier to enter a low-current state, I
DD
= 150
μ
A. SHUTDOWN should never be left
unconnected because amplifier operation would be unpredictable.
Table 6. Shutdown and Mute Mode Functions
INPUTS
AMPLIFIER STATE
SE/BTL
SHUTDOWN
INPUT
OUTPUT
Low
High
Line
BTL
X
Low
X
Mute
High
High
HP
SE
Inputs should never be left unconnected.
X = do not care
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| TPA0122PWPG4 | 功能描述:音頻放大器 2W Stereo A RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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