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FEATURES

DESCRIPTION

TAS5701

20-W STEREO DIGITAL AUDIO POWER AMPLIFIER

• General Features

• Audio Input/Output

–

5-V Tolerant Inputs (See pin list for details

on which inputs are 5-V tolerant)

–

20-W Into an 8-

Ω Load From an 18-V Supply

–

Shutdown Mode for Low Power

–

Wide PVDD Range (0 V to 21 V)

Consumption

–

Efficient Class-D Operation Eliminates

–

Thermal and Short-Circuit Protection

Need for Heat Sinks

–

Autodetect: Automatically Detect

–

Two Serial Audio Inputs (3 Audio channels)

Sample-Rate Changes – No Need for

–

Supports 32-kHz to 192-kHz Sample Rates

External Microprocessor Intervention

–

Line-Level Subwoofer PWM Outputs

• Audio/PWM Processing

The TAS5701 is a 20-W efficient, digital audio power

–

BD (Filter-free) Modulation Supporting

amplifier for driving stereo bridge-tied speakers. Two

Bridge-Tied Loads ONLY

serial data inputs support up to 3 discrete audio

channels. The SDIN1 input is routed to the internal

–

4-Step Volume Control (0 dB, 6 dB, 12 dB,

left and right outputs. The SDIN2 input is dedicated to

18 dB)

the SUB_PWM± outputs.

– All Channels Share Same Control

The TAS5701 is a clock slave-only device receiving

–

Soft Mute (50% Duty Cycle)

clocks from external sources. The TAS5701 operates

–

DC Blocking Filters

at a 384-kHz switching rate for 32-, 48-, 96-, and

–

Fixed Maximum Modulation Limit At 97.7%

192-kHz

data

and

352.8-kHz

switching

rate

44.1-,88.2-,

and

176.4-kHz

data.

The

8×

–

≥100-dB SNR – Measured at Maximum

oversampling combined with the fourth-order noise

Output With THD+N = 1%, 1 kHz,

shaper provides a flat noise floor and excellent

A-Weighted Noise, Gain = 0 dB

dynamic range from 20 Hz to 20 kHz.

–

THD < 0.1% at 1/2 Rated Power

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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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, 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.