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

TAS5611A

www.ti.com

SLAS709 – JUNE 2010

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

Check for Samples: TAS5611A

1

FEATURES

APPLICATIONS

•

Home Theater Systems

23

•

PurePath™ HD Enabled Integrated Feedback

Provides:

•

AV Receivers

•

DVD/Blu-ray Receivers

–

Signal Bandwidth up to 80kHz for High

Frequency Content From HD Sources

•

Mini Combo System

•

Active Speakers and Subwoofers

–

Ultralow 0.03% THD at 1W into 4

Ω

–

Flat THD at all Frequencies for Natural

DESCRIPTION

Sound

–

80dB PSRR (BTL, No Input Signal)

The TAS5611A is a high performance analog input

Class

D

amplifier

with

integrated

closed

loop

–

>100dB (A weighted) SNR

feedback technology (known as PurePath™ HD) with

–

Click and Pop Free Startup

Ω

•

Pin compatible with TAS5630, TAS5615 and

Speakers from a single 32.5V supply.

TAS5613

PurePath™

HD

technology

enables

traditional

•

Multiple Configurations Possible on the Same

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

PCB With Stuffing Options:

providing the power efficiency of traditional class D

amplifiers.

–

Mono Parallel Bridge Tied Load (PBTL)

–

Stereo Bridge Tied Load (BTL)

Unlike traditional Class D amplifiers, the distortion

curve only increases once the output levels move into

–

2.1 Single Ended Stereo Pair and Bridge

Tied Load Subwoofer

PurePath™ HD technology enables lower idle losses

•

Total Output Power at 10%THD+N

making the device even more efficient.

–

250W in Mono PBTL Configuration into 2

Ω

–

125W per Channel in Stereo BTL

Configuration into 4

Ω

•

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

•

Two Thermally Enhanced Package Options:

(1)

Achievable output power levels are dependent on the thermal

–

PHD (64-Pin QFP)

configuration of the target application. A high performance

–

DKD (44-Pin PSOP3)

thermal interface material between the package exposed

heatslug and the heat sink should be used to achieve high

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.