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TPA2000D2_07

更新时间： 2024-09-21 03:58:47
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德州仪器 - TI 放大器功率放大器LTE
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20页 608K
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2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

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TPA2000D2  
www.ti.com  
SLOS291F–MARCH 2000–REVISED MARCH 2007  
2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER  
FEATURES  
•
Short-Circuit Protection (Short to Battery,  
Ground, and Load)  
•
Modulation Scheme Optimized to Operate  
Without a Filter  
•
-40°C to 85°C Operating Temperature Range  
•
•
•
2 W Into 3-Ω Speakers (THD+N< 0.4%)  
PW OR PWP PACKAGE  
(TOP VIEW)  
< 0.08% THD+N at 1 W, 1 kHz, Into 4-Ω Load  
Extremely Efficient Third Generation 5-V  
Class-D Technology:  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
PGND  
LOUTN  
GAIN0  
PGND  
LOUTP  
BYPASS  
PV  
DD  
LINP  
2
–
–
–
–
–
–
–
–
Low Supply Current (No Filter) . . . 8 mA  
Low Supply Current (Filter) . . . 15 mA  
Low Shutdown Current . . . 1 µA  
Low Noise Floor . . . 56 µVRMS  
3
4
PV  
DD  
5
LINN  
AGND  
COSC  
RINN  
6
V
DD  
7
ROSC  
RINP  
PV  
DD  
GAIN1  
ROUTP  
PGND  
Maximum Efficiency Into 3 Ω, 65-70%  
Maximum Efficiency Into 8 Ω, 75-85%  
4 Internal Gain Settings . . . 8-23.5 dB  
PSRR . . . -77 dB  
8
9
PV  
DD  
10  
11  
12  
SHUTDOWN  
ROUTN  
PGND  
•
Integrated Depop Circuitry  
DESCRIPTION  
The TPA2000D2 is the third generation 5-V class-D amplifier from Texas Instruments. Improvements to previous  
generation devices include: lower supply current, lower noise floor, better efficiency, four different gain settings,  
smaller packaging, and fewer external components. The most significant advancement with this device is its  
modulation scheme that allows the amplifier to operate without the output filter. Eliminating the output filter saves  
the user approximately 30% in system cost and 75% in PCB area.  
The TPA2000D2 is a monolithic class-D power IC stereo audio amplifier, using the high switching speed of  
power MOSFET transistors. These transistors reproduce the analog signal through high-frequency switching of  
the output stage. The TPA2000D2 is configured as a bridge-tied load (BTL) amplifier capable of delivering  
greater than 2 W of continuous average power into a 3-Ω load at less than 1% THD+N from a 5-V power supply  
in the high fidelity range (20 Hz to 20 kHz). With 1 W being delivered to a 4-Ω load at 1 kHz, the typical THD+N  
is less than 0.08%.  
A BTL configuration eliminates the need for external coupling capacitors on the output. Low supply current of 8  
mA makes the device ideal for battery-powered applications. Protection circuitry increases device reliability:  
thermal, over-current, and under-voltage shutdown.  
Efficient class-D modulation enables the TPA2000D2 to operate at full power into 3-Ω loads at an ambient  
temperature of 85°C.  
AVAILABLE OPTIONS(1)  
PACKAGED DEVICE  
TA  
–40°C to 85°C  
TSSOP (PW)  
TSSOP (PWP)(2)  
TPA2000D2PW  
TPA2000D2PWP  
(1) For the most current package and ordering information, see the Package Option Addendum at the end  
of this document, or see the TI web site at www.ti.com.  
(2) The PWP package is available taped and reeled. To order a taped and reeled part, add the suffix R to  
the part number (e.g., TPA2000D2PWPR).  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2000–2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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