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

TAS5614A

www.ti.com

SLAS712B

– JUNE 2010 – REVISED MARCH 2011

150W STEREO / 300W MONO PurePath™ HD DIGITAL-INPUT POWER STAGE

Check for Samples: TAS5614A

1

FEATURES

APPLICATIONS

•

Home Theater Systems

23

•

PurePath™ HD Enabled Integrated Feedback

Provides:

•

AV Receivers

–

Signal Bandwidth up to 80kHz for High

•

DVD/Blu-ray™ Receivers

Frequency Content From HD Sources

•

Mini Combo Systems

–

Ultralow 0.03% THD at 1W into 4Ω

•

Active Speakers and Subwoofers

–

Ultralow 0.01% THD at 1W into 8Ω

DESCRIPTION

–

Flat THD at all Frequencies for Natural

The TAS5614A is a high performance digital input

Sound

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 36V supply.

•

Pin compatible with TAS5631, TAS5616 and

PurePath

™

HD

technology

enables

traditional

TAS5612

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)

™ HD Power PAD™

–

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

–

300W in Mono PBTL Configuration

–

150W per Channel in Stereo BTL

Configuration

•

Total Output Power in BTL Configuration at

1%THD+N

–

160W Stereo into 3Ω

–

125W Stereo into 4Ω

–

85W Stereo into 6Ω

–

65W Stereo into 8Ω

•

>

90% Efficient Power Stage With 60-mΩ

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

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.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2010–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.