FEATURES

· 2×100 W at 10% THD+N Into 4-W BTL (1)

· 2×80 W at 10% THD+N Into 6-W BTL

· 2×65 W at 10% THD+N Into 8-W BTL

· 4×40 W at 10% THD+N Into 3-W SE

· 4×30 W at 10% THD+N Into 4-W SE

· 1×160 W at 10% THD+N Into 3-W PBTL

· 1×200 W at 10% THD+N Into 2-W PBTL (1)

· >100 dB SNR (A-Weighted)

· <0.1% THD+N at 1 W

· Two Thermally Enhanced Package Options:

– DKD (36-pin PSOP3)

– DDV (44-pin HTSSOP)

· High-Efficiency Power Stage (>90%) With

140-mW Output MOSFETs

· Power-On Reset for Protection on Power Up

Without Any Power-Supply Sequencing

· Integrated Self-Protection Circuits Including

Undervoltage, Overtemperature, Overload,

Short Circuit

· Error Reporting

· EMI Compliant When Used With

Recommended System Design

· Intelligent Gate Drive

APPLICATIONS

· Mini/Micro Audio System

· DVD Receiver

· Home Theater

DESCRIPTION

The TAS5142 is a third-generation, high-performance,

integrated stereo digital amplifier power stage

with an improved protection system. The TAS5142 is

capable of driving a 4-W bridge-tied load (BTL) at up

to 100 W per channel with low integrated noise at the

output, low THD+N performance, and low idle power

dissipation.

A low-cost, high-fidelity audio system can be built

using a TI chipset, comprising a modulator (e.g.,

TAS5508) and the TAS5142. This system only

requires a simple passive LC demodulation filter to

deliver high-quality, high-efficiency audio amplification

with proven EMI compliance. This device requires two

power supplies, at 12 V for GVDD and VDD, and at

32 V for PVDD. The TAS5142 does not require

power-up sequencing due to internal power-on reset.

The efficiency of this digital amplifier is greater than

90% into 6 W, which enables the use of smaller

power supplies and heatsinks.

The TAS5142 has an innovative protection system

integrated on-chip, safeguarding the device against a

wide range of fault conditions that could damage the

system. These safeguards are short-circuit protection,

overcurrent protection, undervoltage protection, and

overtemperature protection. The TAS5142 has a new

proprietary current-limiting circuit that reduces the

possibility of device shutdown during high-level music

transients. A new programmable overcurrent detector

allows the use of lower-cost inductors in the

demodulation output filter.