TAS5612LA中文资料德州仪器数据手册PDF规格书

1 Features

1• PurePath™ HD Integrated Feedback Provides:

– 0.05% 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 60-mΩ

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 in PBTL Mono Configuration

• Output Power at 1% THD+N

– 105-W and 4-Ω BTL Stereo Configuration

– 55-W and 8-Ω BTL Stereo 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 TAS5612LA is a feature optimized class-D power

amplifier based on the TAS5612A.

The TAS5612LA uses 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

TAS5612LA leads to industry-leading levels of

efficiency ensuring a super “green” system.

The TAS5612LA 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 TAS5612LA makes the

amplifier easy to use; and, using TI’s reference

schematics and PCB layouts leads to fast design in

time. The TAS5612LA is available in the space- saving, surface-mount, 44-pin HTSSOP package.