TPA4861 Datasheet, PDF (1/24 Pages) Texas Instruments – 1-W AUDIO POWER AMPLIFIER

TPA4861
1-W AUDIO POWER AMPLIFIER
D 1-W BTL Output (5 V, 0.11 % THD+N)
D 3.3-V and 5-V Operation
D No Output Coupling Capacitors Required
D Shutdown Control (I_DD = 0.6 µA)
D Uncompensated Gains of 2 to 20 (BTL
Mode)
D Surface-Mount Packaging
D Thermal and Short-Circuit Protection
D High Supply Ripple Rejection Ratio
(56 dB at 1 kHz)
D LM4861 Drop-In Compatible
SLOS163B – SEPTEMBER 1996 – REVISED MARCH 2000
D PACKAGE
(TOP VIEW)
SHUTDOWN 1
8
V_O2
BYPASS 2
7
GND
IN+ 3
6
V_DD
IN– 4
5
V_O1
description
The TPA4861 is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average
power into an 8-Ω load at 0.2% THD+N from a 5-V power supply in voiceband frequencies (f < 5 kHz). A BTL
configuration eliminates the need for external coupling capacitors on the output in most applications. Gain is
externally configured by means of two resistors and does not require compensation for settings of 2 to 20.
Features of the amplifier are a shutdown function for power-sensitive applications as well as internal thermal
and short-circuit protection. The TPA4861 works seamlessly with TI’s TPA4860 in stereo applications. The
amplifier is available in an 8-pin SOIC surface-mount package that reduces board space and facilitates
automated assembly.
Audio
Input
RF
RI
4 ^{IN –}
CI
3 IN +
CB
VDD/2
–
+
VDD 6
VO1 5
VDD
CS
1W
2 BYPASS
–
+
VO2 8
1 ^SHUTDOWN
Bias
Control
7
GND
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 2000, Texas Instruments Incorporated
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