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TPA6138A2 PDF预览

TPA6138A2

更新时间： 2024-11-20 12:21:59
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
15页 600K
描述
50-mW ULTRALOW VOLTAGE STEREO HEADPHONE AUDIO POWER AMPLIFIER

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TPA6138A2 数据手册

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TPA6100A2D  
www.ti.com  
SLOS269B–JUNE 2000–REVISED SEPTEMBER 2004  
50-mW ULTRALOW VOLTAGE STEREO HEADPHONE AUDIO POWER AMPLIFIER  
FEATURES  
D PACKAGE  
(TOP VIEW)  
•
•
•
•
•
•
•
•
50-mW Stereo Output  
Low Supply Current . . . 0.75 mA  
Low Shutdown Current . . . 50 nA  
Pin Compatible With LM4881 and TPA102  
Pop Reduction Circuitry  
BYPASS  
GND  
SHUTDOWN  
IN2–  
IN1–  
V 1  
1
2
3
4
8
7
6
5
O
(1)  
V
DD  
V 2  
O
Internal Midrail Generation  
Thermal and Short-Circuit Protection  
Surface-Mount Packaging  
DGK PACKAGE  
(TOP VIEW)  
– MSOP and SOIC  
BYPASS  
GND  
SHUTDOWN  
IN2–  
IN1–  
1
2
3
4
8
7
6
5
•
1.6-V to 3.6-V Supply Voltage Range  
V 1  
O
V
DD  
V 2  
O
(1) The polarity of the SHUTDOWN pin is reversed.  
DESCRIPTION  
The TPA6100A2D is a stereo audio power amplifier packaged in either an 8-pin SOIC package or an 8-pin  
MSOP package capable of delivering 50 mW of continuous RMS power per channel into 16-Ω loads. Amplifier  
gain is externally configured by a means of three resistors per input channel and does not require external  
compensation for settings of 1 to 10.  
The TPA6100A2D is optimized for battery applications because of its low supply current, shutdown current, and  
THD+N. To obtain the low-supply voltage range, the TPA6100A2D biases BYPASS to VDD/4. A resistor with a  
resistance equal to RF must be added from the inputs to ground to allow the output to be biased at VDD/2.  
When driving a 16-Ω load with 45-mW output power from 3.3 V, THD+N is 0.04% at 1 kHz, and less than 0.2%  
across the audio band of 20 Hz to 20 kHz. For 28 mW into 32-Ω loads, the THD+N is reduced to less than 0.03%  
at 1 kHz, and is less than 0.2% across the audio band of 20 Hz to 20 kHz.  
TYPICAL APPLICATION CIRCUIT  
V
6
7
R
DD  
F
V
DD  
Audio  
Input  
C
V
DD  
/4  
S
R
I
IN1−  
8
1
V 1  
O
−
+
R
C
I
C
C
BYPASS  
C
C
B
Audio  
Input  
R
I
IN2−  
4
V 2  
O
−
+
5
2
R
C
I
C
SHUTDOWN  
Bias  
3
From Shutdown  
Control Circuit  
Control  
R
F
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 © 2000–2004, 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.  
1234567...15

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