TAS5121

SLES086A − NOVEMBER 2003 − REVISED MARCH 2004

DIGITAL AMPLIFIER POWER STAGE

TM

FEATURES

Than 10% THD+N

Than 0.2% THD+N

Into 4

Ω Load

Recommended System Design

APPLICATIONS

DESCRIPTION

The TAS5121 is a high-performance digital amplifier

power stage designed to drive a 4-

Ω speaker up to 100 W.

The device incorporates PurePath Digital

 technology

and can be used with a TI audio PWM processor 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 TAS5121, safeguarding the

device and speakers against fault conditions that could

damage the system.

P − Power − W

RL = 4 Ω

TC = 75°C

Gain = 3 dB

TOTAL HARMONIC DISTORTION + NOISE

vs

POWER

0.1

1

10

100

10

1

0.01

0.1

PVDD_X − H-Bridge Voltage − V

0

10

20

30

40

50

60

70

80

90

0

4

8

12

16

20

24

28

32

UNCLIPPED OUTPUT POWER

vs

H-BRIDGE VOLTAGE

8

Ω

4

Ω

6

Ω

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