TAS5076 datasheet(7/62 Pages) TI

7 / 62 page

Introduction

SLES090A—November 2003—Revised January 2004

TAS5076

Introduction

The TAS5076 is an innovative, cost-effective, high-performance 24-bit six-channel digital pulse-width

modulator (PWM) based on Equibit

 technology. Combined with a TI PurePath Digital audio amplifier power

stage, these devices use noise-shaping and sophisticated error-correction algorithms to achieve high power

efficiency and high-performance digital audio reproduction. The TAS5076 is designed to drive up to six digital

power devices to provide six channels of digital audio amplification. The digital power devices can be six

conventional monolithic power stages (such as the TAS5110) or six discrete differential power stages using

gate drivers and MOSFETs.

The TAS5076 has six independent volume controls and mute. The device operates in AD and BD modes. This

all-digital audio system contains only two analog components in the signal chain—an LC low-pass filter at each

speaker terminal. Dynamic range of 105 dB for the front channels and 102 dB for the other channels is

achievable on the TAS5076-TAS5182 EVM using the specified ABD and interchannel delay settings. The

TAS5076 has a wide variety of serial input options including right justified (16-, 20-, or 24-bit), I2S (16-, 20-,

or 24-bit) left justified, and DSP (16-bit) data formats. The device is fully compatible with AES standard

sampling rates of 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz, including de-emphasis for

44.1-kHz and 48-kHz sample rates. The TAS5076 plus the TAS51xx power stage device combination was

designed for home theater applications such as DVD minicomponent systems, home theater in a box (HTIB),

DVD receiver, A/V receiver, or TV sets.

1.1

Features

•

TI PurePath Digital Audio Amplifier

•

High-Quality Audio

−

Up to105-dB Dynamic Range†

−

<0.005% THD+N

•

Six-Channel Volume Control

−

Patented Soft Volume

−

Patented Soft Mute

•

16-, 20-, or 24-Bit Input Data

•

Sampling Rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz

•

Supports Master and Slave Modes

•

3.3-V Power-Supply Operation

•

Economical 80-Pin TQFP Package

•

De-Emphasis: 32 kHz, 44.1 kHz, and 48 kHz

•

Clock Oscillator Circuit for Master Modes

•

Low-Jitter Internal PLL

•

Soft Volume and Mute Update

† Measured TAS5076-TAS5182 EVM

Equibit and PurePath Digital are trademarks of Texas Instruments.

Other trademarks are the property of their respective owners.

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