TPA4860

1-W MONO AUDIO POWER AMPLIFIER

SLOS164A – SEPTEMBER 1996 – REVISED MARCH 2000

1

POST OFFICE BOX 655303

Mode)

(56-dB at 1 kHz)

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

Bias

Control

VDD

1 W

12

10

15

1, 4, 8, 9, 16

VO1

VO2

VDD

2

3

7

6

5

14

13

11

GAIN

IN +

IN –

BYPASS

HP-IN1

HP-IN2

HP-SENSE

SHUTDOWN

VDD/2

CI

RI

RF

VDD

RPU

Headphone

Plug

NC

CB

CS

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.

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND

SHUTDOWN

HP-SENSE

GND

BYPASS

HP-IN1

HP-IN2

GND

GND

IN+

IN–

GAIN

GND

D PACKAGE

(TOP VIEW)

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.

Copyright

© 2000, Texas Instruments Incorporated