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1

2

3

4

8

7

6

5

BYPASS

GND

SHUTDOWN

IN2–

IN1–

DGK PACKAGE

(TOP VIEW)

1

2

3

4

8

7

6

5

BYPASS

GND

SHUTDOWN

IN2–

IN1–

D PACKAGE

(TOP VIEW)

DESCRIPTION

TYPICAL APPLICATION CIRCUIT

Audio

Input

Bias

Control

6

7

5

2

3

8

1

4

IN 1−

BYPASS

SHUTDOWN

Audio

Input

IN 2−

From Shutdown

Control Circuit

−

+

−

+

R

R

TPA6100A2D

SLOS269B – JUNE 2000 – REVISED SEPTEMBER 2004

50-mW ULTRALOW VOLTAGE STEREO HEADPHONE AUDIO POWER AMPLIFIER

•

50-mW Stereo Output

•

Low Supply Current . . . 0.75 mA

•

Low Shutdown Current . . . 50 nA

•

•

Pop Reduction Circuitry

•

Internal Midrail Generation

•

Thermal and Short-Circuit Protection

•

Surface-Mount Packaging

– MSOP and SOIC

•

1.6-V to 3.6-V Supply Voltage Range

(1)

The polarity of the SHUTDOWN pin is reversed.

The TPA6100A2D is a stereo audio power amplifier packaged in either an 8-pin SOIC package or an 8-pin

MSOP package capable of delivering 50 mW of continuous RMS power per channel into 16-

Ω loads. Amplifier

gain is externally configured by a means of three resistors per input channel and does not require external

compensation for settings of 1 to 10.

The TPA6100A2D is optimized for battery applications because of its low supply current, shutdown current, and

When driving a 16-

Ω load with 45-mW output power from 3.3 V, THD+N is 0.04% at 1 kHz, and less than 0.2%

across the audio band of 20 Hz to 20 kHz. For 28 mW into 32-

Ω loads, the THD+N is reduced to less than 0.03%

at 1 kHz, and is less than 0.2% across the audio band of 20 Hz to 20 kHz.

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.

Copyright © 2000–2004, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.