TPA6043A4
www.ti.com SLOS543 – AUGUST 2007 2-W STEREO AUDIO POWER AMPLIFIER
WITH DirectPathв„ў STEREO HEADPHONE DRIVE AND REGULATOR
FEATURES 1 23 DESCRIPTION Microsoftв„ў Windows Vistaв„ў Compliant
Fully Differential Architecture and High PSRR
Provide Excellent RF Rectification Immunity
2-W, 10% THD+N Into 4-Ω Speakers and
85-mW, 1% THD+N Into 16-Ω Headphones
From 5-V Supply
DirectPathв„ў Headphone Amplifier Eliminates
Output Capacitors (1)
Internal 4-Step Speaker Gain Control: 6, 10,
15.6, 21.6 dB and Fixed –1.5-V/V Headphone
3.3-V Low Dropout Regulator for CODEC
Independent Shutdown Controls for Speaker,
Headphone Amplifier, and Low Dropout
Regulator (LDO)
Output Short-Circuit and Thermal Protection The TPA6043A4 is a stereo audio power amplifier
and DirectPathв„ў headphone amplifier in a thermally
enhanced, space-saving, 32-pin QFN package. The
speaker amplifier is capable of driving 2 W per
channel continuously into 4-Ω loads at 5 V. The
headphone amplifier achieves a minimum of 85 mW …
