LEFTINM

LEFTINP

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HPRIGHT

HPLEFT

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TEST2

Audio Source

0.47uF

0.47uF

0.47uF

0.47uF

1uF

1uF

1uF

1uF

VBAT

VBAT

GPIO

LEFT_OUTM

LEFT_OUTP

RIGHT_OUTM

RIGHT_OUTP

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TPA6133A2

SLOS821B – JUNE 2013 – REVISED SEPTEMBER 2014

TPA6133A2 138-mW DirectPath™ Stereo Headphone Amplifier

1 Features

3 Description

The TPA6133A2 is a stereo DirectPath™ headphone

1

•

DirectPath™ Ground-Referenced Outputs

amplifier with GPIO control. The TPA6133A2 has

–

Eliminates Output DC Blocking Capacitors

minimal quiescent current consumption, with a typical

–

Reduces Board Area

applications. The GPIO control allows the device to

–

Reduces Component Height and Cost

be put in a low power shutdown mode.

–

Full Bass Response Without Attenuation

The TPA6133A2 is a high fidelity amplifier with an

•

Power Supply Voltage Range: 2.5 V to 5.5 V

SNR of 93 dB. A PSRR greater than 100 dB enables

•

High Power Supply Rejection Ratio

direct-to-battery connections without compromising

(>100 dB PSRR)

the listening experience. The output noise of 12

•

Differential Inputs for Maximum Noise Rejection

μVrms (typical A-weighted) provides a minimal noise

background during periods of silence. Configurable

(69 dB CMRR)

differential inputs and high CMRR allow for maximum

•

High-Impedance Outputs When Disabled

noise rejection in the noisy environment of a mobile

•

Advanced Pop and Click Suppression Circuitry

device.

•

GPIO Control for Shutdown

Device Information(1)

•

20 Pin, 4 mm x 4 mm WQFN Package

PART NUMBER

PACKAGE

BODY SIZE (NOM)

2 Applications

TPA6133A2

WQFN (20)

4.00 mm x 4.00 mm

(1) For all available packages, see the orderable addendum at

•

Mobile Phones

the end of the datasheet.

•

Audio Headsets

•

Notebook Computers

•

High Fidelity Applications

4 Simplified Application Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.