TPA4860 Datasheet, PDF (1/25 Pages) Texas Instruments – 1-W MONO AUDIO POWER AMPLIFIER

TPA4860
1-W MONO AUDIO POWER AMPLIFIER
D 1-W BTL Output (5 V, 0.2 % 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 Headphone Interface Logic
D Uncompensated Gains of 2 to 20 (BTL
Mode)
D Surface-Mount Packaging
D Thermal and Short-Circuit Protection
D High Power Supply Rejection
(56-dB at 1 kHz)
D LM4860 Drop-In Compatible
SLOS164A – SEPTEMBER 1996 – REVISED MARCH 2000
D PACKAGE
(TOP VIEW)
GND
SHUTDOWN
HP-SENSE
GND
BYPASS
HP-IN1
HP-IN2
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
GND
V_O2
IN+
IN–
V_DD
GAIN
V_O1
GND
description
The TPA4860 is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average
power into an 8-Ω load at 0.4 % 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 this amplifier are a shutdown function for power-sensitive applications as well as headphone
interface logic that mutes the output when the speaker drive is not required. Internal thermal and short-circuit
protection increases device reliability. It also includes headphone interface logic circuitry to facilitate headphone
applications. The amplifier is available in a 16-pin SOIC surface-mount package that reduces board space and
facilitates automated assembly.
typical application circuit
Audio
Input
RI
CI
RF
11 GAIN
13 ^{IN –}
14 IN +
CB
NC
VDD
RPU
Headphone
Plug
5 BYPASS
6 HP-IN1
7 HP-IN2
3 ^HP-SENSE
2 ^SHUTDOWN
VDD/2
VDD 12
VDD
CS
VO1 10
1W
VO2 15
Bias
Control
1, 4, 8, 9, 16
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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