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1 Features

1? PurePath? HD Integrated Feedback Provides:

– 0.025% THD at 1 W into 4 Ω

– > 65-dB PSRR (No Input Signal)

– > 105 dB (A weighted) SNR

? Preclipping Output for Control of a Class-G Power

Supply

? Reduced Heat Sink Size Due to Use of 40mΩ

Output MOSFET With > 90% Efficiency at Full

Output Power

? Output Power at 10%THD+N

– 125-W and 4-Ω BTL Stereo Configuration

– 250-W and 2-Ω PBTL Mono Configuration

? Output Power at 1%THD+N

– 105-W and 4-Ω BTL Stereo Configuration

– 210-W and 2-Ω PBTL Mono Configuration

? Click and Pop Free Start-up

? Error Reporting Self-Protected Design With UVP,

Overtemperature, and Short-Circuit Protection

? EMI Compliant When Used With Recommended

System Design

? 44-Pin HTSSOP (DDV) Package for Reduced

Board Size

2 Applications

? Blu-ray? and DVD Receivers

? High-Power Sound Bars

? Powered Subwoofer and Active Speakers

? Mini Combo Systems

3 Description

The TAS5622A device is a thermally enhanced

version of the class-D power amplifier based on the TAS5612A using large MOSFETs for improved power

efficiency and a novel gate drive scheme for reduced

losses in idle and at low output signals leading to

reduced heat sink size.

The unique preclipping output signal can be used to

control a class-G power supply. This combined with

the low idle loss and high power efficiency of the

TAS5622A leads to industry-leading levels of efficiency ensuring a super “green” system.

The TAS5622A uses constant voltage gain. The internally matched gain resistors ensure a high Power

Supply Rejection Ratio giving an output voltage only

dependent on the audio input voltage and free from

any power supply artifacts.

The high integration of the TAS5622A makes the

amplifier easy to use; and, using TI’s reference schematics and PCB layouts leads to fast design in

time. The TAS5622A is available in the space-saving,

surface-mount, 44-pin HTSSOP package.