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TPA2000D4GQC

更新时间： 2024-09-20 23:37:11
品牌 Logo 应用领域
其他 - ETC 商用集成电路音频放大器
页数 文件大小 规格书
27页 457K
描述
AUDIO AMPLIFIER|DUAL|CMOS|BGA|48PIN|PLASTIC

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TPA2000D4GQC 数据手册

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TPA2000D4  
STEREO 2-W CLASS-D AUDIO POWER AMPLIFIER  
WITH STEREO HP AMPLIFIER  
SLOS337 – DECEMBER 2000  
DAP PACKAGE  
(TOP VIEW)  
D
Ideal for Notebook PCs and USB-Powered  
Speakers  
D
D
D
2 W Into 4 Ω From 5-V Supply  
1
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
LINN  
LINP  
HPLIN  
GAIN0  
GAIN1  
RINN  
RINP  
2
Integrated Class-AB Headphone Amplifier  
3
HPRIN  
BYPASS  
SHUTDOWN  
PVDDR  
ROUTP  
PGNDR  
PGNDR  
ROUTN  
PVDDR  
NC  
Second-Generation Modulation Technique  
– Filterless Operation  
– Improved Efficiency  
4
5
6
PVDDL  
LOUTP  
PGNDL  
PGNDL  
LOUTN  
PVDDL  
HPLGAIN  
HPLOUT  
MODE  
D
D
D
D
Low Supply Current . . . 9 mA typ at 5 V  
Shutdown Control . . . < 0.05 µA Typ  
Shutdown Pin Is TTL Compatible  
7
8
9
10  
11  
12  
13  
14  
15  
16  
–40°C to 85°C Operating Temperature  
Range  
D
Space-Saving, Thermally-Enhanced  
VDD  
COSC  
ROSC  
AGND  
{
MicroStar BGA and PowerPAD  
Packaging  
HPRGAIN  
HPROUT  
description  
NC – No internal connection  
The TPA2000D4 is a 2-W stereo bridge-tied-load  
(BTL) class-D amplifier designed to drive  
speakers with as low as 4-Ω impedance. The amplifier uses TI’s second-generation modulation technique,  
which results in improved efficiency and SNR, and also allows the device to be connected directly to the speaker  
without the use of the LC output filter commonly associated with class-D amplifiers (this will result in an EMI  
which must be shielded at the system level). These features make the device ideal for use in notebook PCs  
where high-efficiency is needed to extend battery run-time. For speakers powered off the USB bus, the  
high-efficiency allows for higher output power levels without tripping the USB’s over-current circuitry.  
The gain of the amplifier is controlled by two input terminals, GAIN1, and GAIN0. This allows the amplifier to  
be configured for a gain of 5, 11, 17 and 23 dB. The differential input terminals are high-impedance CMOS  
inputs, and can be used as summing nodes.  
The headphone amplifier is a stereo single-ended (SE) class-AB amplifier which requires two external resistors  
per channel to set the gain. The MODE pin selects which amplifier is active; the unused amplifier is placed in  
shutdown to reduce supply current.  
Both the class-D BTL amplifier, and the class-AB SE amplifier include depop circuitry to reduce the amount of  
turnon pop at power up, when cycling SHUTDOWN, and when switching modes of operation.  
TheTPA2000D4isavailableinthe32-pinthermally-enhancedTSSOPpackage(DAP)andTI’snewMicroStar  
BGA package which is thermally-enhanced to allow stereo 2-W continuous output power levels in 4-Ω loads  
when placed on a board with proper thermal board design. The TPA2000D4 operates over an ambient  
temperature range of –40°C to 85°C.  
These thermally-enhanced packages deliver levels of thermal performance that were previously only  
achievable in TO-220-type packages. Thermal impedances of less than 35°C/W are readily realized in  
multilayer PCB applications when using the DAP package.  
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.  
†
This package is in the PRODUCT PREVIEW stage of development.  
MicroStar and PowerPAD are trademarks of Texas Instruments.  
Copyright 2000, Texas Instruments Incorporated  
This document contains information on products in more than one phase  
of development. The status of each device is indicated on the page(s)  
specifying its electrical characteristics.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...27

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