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TPA0222

更新时间： 2024-09-20 22:42:03
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
33页 522K
描述
STEREO 2-W AUDIO POWER AMPLIFIER WITH FOUR SELECTABLE GAIN SETTINGS AND MUX CONTROL

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TPA0222 数据手册

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TPA0222  
STEREO 2-W AUDIO POWER AMPLIFIER  
WITH FOUR SELECTABLE GAIN SETTINGS AND MUX CONTROL  
SLOS285 – NOVEMBER 1999  
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  
Input MUX Select Terminal  
PC-Beep Input  
6
V
DD  
7
PV  
PV  
DD  
DD  
8
RIN  
LOUT–  
LIN  
BYPASS  
GND  
HP/LINE  
ROUT–  
SE/BTL  
PC-BEEP  
GND  
9
Depop Circuitry  
10  
11  
12  
Stereo Input MUX  
Fully Differential Input  
Low Supply Current and Shutdown Current  
Surface-Mount Power Packaging  
24-Pin TSSOP PowerPAD  
description  
The TPA0222 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 TPA0222 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 24V/Vareprovided, whileSEgainisalwaysconfiguredas1V/Vforheadphonedrive. Aninternal  
input MUX allows two sets of stereo inputs to the amplifier. The HP/LINE terminal allows the user to select which  
MUX input is active regardless of whether the amplifier is in SE or BTL mode. In notebook applications, where  
internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the  
TPA0222 automatically switches into SE mode when the SE/BTL input is activated, and reduces the gain to 1  
V/V.  
The TPA0222 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 TPA0222 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 1999, 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...33

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