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TPA112

150-mW STEREO AUDIO POWER AMPLIFIER

SLOS212C – AUGUST 1998 – REVISED MARCH 2000

1

POST OFFICE BOX 655303

– Fully Specified for 3.3 V and 5 V

Operation

– Operational From 2.5 V to 5.5 V

– PowerPAD

™ MSOP

– SOIC

description

The TPA112 is a stereo audio power amplifier packaged in an 8-pin PowerPAD

™ MSOP package capable of

delivering 150 mW of continuous RMS power per channel into 8-

Ω loads. Amplifier gain is externally configured

by means of two resistors per input channel and does not require external compensation for settings of 1 to 10.

THD+N when driving an 8-

Ω load from 5 V is 0.1% at 1 kHz, and less than 2% across the audio band of 20 Hz

to 20 kHz. For 32-

Ω loads, the THD+N is reduced to less than 0.06% at 1 kHz, and is less than 1% across the

audio band of 20 Hz to 20 kHz. For 10-k

Ω loads, the THD+N performance is 0.01% at 1 kHz, and less than 0.02%

across the audio band of 20 Hz to 20 kHz.

functional block diagram

Short-Circuit

Protection

Over-Temperature

Protection

VDD

8

VDD

IN1–

IN1+

IN2–

IN2+

2

3

6

5

VO1

1

VO2

7

4

RF

RF

RF

RI

RI

RI

RI

VDD/2

CI

CI

CI

CI

LIN–

LIN+

RIN–

RIN+

RF

RO

RO

RC

RC

CC

CC

To Headphone

Jack

(See TPA152)

Copyright

© 2000, Texas Instruments Incorporated

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.

1

2

3

4

8

7

6

5

IN1–

IN1+

GND

IN2–

IN2+

D OR DGN PACKAGE

(TOP VIEW)

PowerPAD is a trademark of Texas Instruments.