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TPA0122PWP

更新时间： 2024-09-20 22:19:19
品牌 Logo 应用领域
德州仪器 - TI 放大器功率放大器
页数 文件大小 规格书
34页 534K
描述
2-W STEREO AUDIO POWER AMPLIFIER WITH FOUR SELECTABLE GAIN SETTINGS

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TPA0122PWP 数据手册

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TPA0122  
2-W STEREO AUDIO POWER AMPLIFIER  
WITH FOUR SELECTABLE GAIN SETTINGS  
SLOS247B – JUNE 1999 – REVISED MARCH 2000  
PWP PACKAGE  
(TOP VIEW)  
Compatible With PC 99 Desktop Line-Out  
Into 10-kΩ Load  
Compatible With PC 99 Portable Into 8-Ω  
Load  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
GND  
GAIN0  
GAIN1  
LOUT+  
LLINEIN  
LHPIN  
GND  
2
RLINEIN  
SHUTDOWN  
ROUT+  
RHPIN  
3
Internal Gain Control, Which Eliminates  
External Gain-Setting Resistors  
4
5
2-W/Ch Output Power Into 3-Ω Load  
PC-Beep Input  
6
V
DD  
7
PV  
PV  
DD  
DD  
8
Depop Circuitry  
RIN  
LOUT–  
LIN  
BYPASS  
GND  
PCB ENABLE  
ROUT–  
SE/BTL  
PC-BEEP  
GND  
9
Stereo Input MUX  
10  
11  
12  
Fully Differential Input  
Low Supply Current and Shutdown Current  
Surface-Mount Power Packaging  
24-Pin TSSOP PowerPAD  
description  
The TPA0122 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of  
delivering 2 W of continuous RMS power per channel into 3-Ω loads. This device minimizes the number of  
external components needed, simplifying the design, and freeing up board space for other features. When  
driving 1 W into 8-Ω speakers, the TPA0122 has less than 0.5% THD+N across its specified frequency range.  
Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise in  
the speakers.  
Amplifier gain is internally configured and controlled by two terminals (GAIN0 and GAIN1). BTL gain settings  
of –2, –6, –12, and –24 V/V are provided, while SE gain is always configured as –1 V/V for headphone drive.  
An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal  
speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0122  
automatically switches into SE mode when the SE/BTL input is activated, and reduces the gain to –1 V/V.  
The TPA0122 consumes only 18 mA of supply current during normal operation. A miserly shutdown mode  
reduces the supply current to less than 150 µA.  
The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only  
in TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB  
applications. This allows the TPA0122 to operate at full power into 8-Ω loads at an ambient temperature of 85°C.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PowerPAD is a trademark of Texas Instruments Incorporated.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...34

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TPA0122PWP 替代型号

型号 品牌 替代类型 描述 数据表
TPA0122PWPR TI

完全替代

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