0,1

1

10

4Ohm (6kHz)

4Ohm (1kHz)

TOTAL HARMONIC DISTORTION+NOISE

VS

OUTPUT POWER

0,001

0,01

0,1

1

10

0,01

1

100

P

4Ohm (6kHz)

4Ohm (1kHz)

TOTAL HARMONIC DISTORTION+NOISE

VS

OUTPUT POWER

TC = 75 C

CONFIG = BTL

TAS5612A

www.ti.com

SLAS710 – JUNE 2010

125W STEREO / 250W MONO PurePath™ HD DIGITAL-INPUT POWER STAGE

Check for Samples: TAS5612A

1

FEATURES

APPLICATIONS

•

Home Theater Systems

23

•

PurePath™ HD Enabled Integrated Feedback

Provides:

•

AV Receivers

•

DVD/Blu-ray™ Disc Receivers

–

Signal Bandwidth up to 80kHz for High

Frequency Content From HD Sources

•

Mini Combo Systems

•

Active Speakers and Subwoofers

–

Ultralow 0.03% THD at 1W into 4

Ω

–

Ultralow 0.01% THD at 1W into 8

Ω

DESCRIPTION

–

Flat THD at all Frequencies for Natural

Sound

The TAS5612A is a high performance digital input

Class

D

amplifier

with

integrated

closed

loop

–

80dB PSRR (BTL, No Input Signal)

feedback technology (known as PurePath™ HD) with

–

>100dB (A weighted) SNR

Ω

–

Click and Pop Free Startup

Speakers from a single 32.5V supply.

•

Pin compatible with TAS5631, TAS5616 and

PurePath™

HD

technology

enables

traditional

TAS5614

AB-Amplifier performance (<0.03% THD) levels while

providing the power efficiency of traditional class D

•

Multiple Configurations Possible on the Same

amplifiers.

PCB With Stuffing Options:

–

Mono Parallel Bridge Tied Load (PBTL)

Unlike traditional Class D amplifiers, the distortion

curve only increases once the output levels move into

–

Stereo Bridge Tied Load (BTL)

–

2.1 Single Ended Stereo Pair and Bridge

PurePath™ HD technology enables lower idle losses

Tied Load Subwoofer

making the device even more efficient.

•

Total Output Power at 10%THD+N

–

250W in Mono PBTL Configuration

–

125W per Channel in Stereo BTL

Configuration

•

Total Output Power in BTL configuration at

1%THD+N

–

130W Stereo into 3

Ω

–

105W Stereo into 4

Ω

–

70W Stereo into 6

Ω

–

55W Stereo into 8

Ω

•

>90% Efficient Power Stage With 60-m

Ω

Output MOSFETs

•

Self-Protection Design (Including

Undervoltage, Overtemperature, Clipping, and

Short-Circuit Protection) With Error Reporting

•

EMI Compliant When Used With

Recommended System Design

(1)

Achievable output power levels are dependent on the thermal

•

Two Thermally Enhanced Package Options:

configuration of the target application. A high performance

–

PHD (64-Pin QFP)

thermal interface material between the package exposed

heatslug and the heat sink should be used to achieve high

–

DKD (44-Pin PSOP3)

output power levels.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PurePath, Power PAD are trademarks of Texas Instruments.

3

All other trademarks are the property of their respective owners.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2010, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.