TPA4860_06 Datasheet, PDF (1/24 Pages) Texas Instruments – 1-W MONO AUDIO POWER AMPLIFIER

www.ti.com
TPA4860
SLOS164B – SEPTEMBER 1996 – REVISED JUNE 2004
1-W MONO AUDIO POWER AMPLIFIER
FEATURES
• 1-W BTL Output (5 V, 0.2 % THD+N)
• 3.3-V and 5-V Operation
• No Output Coupling Capacitors Required
• Shutdown Control (I_DD = 0.6 µA)
• Headphone Interface Logic
• Uncompensated Gains of 2 to 20 (BTL Mode)
• Surface-Mount Packaging
• Thermal and Short-Circuit Protection
• High Power Supply Rejection(56-dB at 1 kHz)
• LM4860 Drop-In Compatible
GND
SHUTDOWN
HP-SENSE
GND
BYPASS
HP-IN1
HP-IN2
GND
D PACKAGE
(TOP VIEW)
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
R_F
R_I
C_I
C_B
NC
V_DD
R_PU
Headphone
Plug
11 GAIN
13 ^IN–
14 IN+
5 BYPASS
6 HP-IN1
7 HP-IN2
3 ^HP-SENSE
2 ^SHUTDOWN
V_DD/2
V_DD 12
V_DD
C_S
V_O1 10
1W
V_O2 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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1996–2004, Texas Instruments Incorporated