TAS5111

SLES049D − JULY 2003 − REVISED MARCH 2004

DIGITAL AMPLIFIER POWER STAGE

TM

FEATURES

Than 0.2% THD+N

TAS5026)

and 8-

Ω Loads

− Smaller Power Supplies

Recommended System Design

APPLICATIONS

DESCRIPTION

The TAS5111 is a high-performance digital amplifier power

stage designed to drive a 4-

Ω speaker up to 70 W with

0.2% distortion plus noise. The device incorporates TI’s

PurePath Digital

 technology and is used with a digital

audio PWM processor (TAS50XX) and a simple passive

demodulation filter to deliver high-quality, high-efficiency

digital audio amplification.

The efficiency of this digital amplifier can be greater than

90%, depending on the system design. Overcurrent

protection, overtemperature protection, and undervoltage

protection are built into the TAS5111, safeguarding the

device and speakers against fault conditions that could

damage the system.

PO − Output Power − W

100m

RL = 4 Ω

TC = 75°C

1

10

100

0.01

0.1

1

THD + NOISE vs OUTPUT POWER

f − Frequency − Hz

20

100

1k

10k

0.001

0.1

1

20k

RL = 4 Ω

TC = 75°C

0.01

PO = 70 W

PO = 1 W

PO = 10 W

THD + NOISE vs FREQUENCY

PurePath Digital and PowerPAD are trademarks of Texas Instruments. Other trademarks are the property of their respective owners.

PRODUCTION DATA information is 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.

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.

www.ti.com

Copyright

 2004, Texas Instruments Incorporated