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1.1

Overview

1.2

TAS5508-5122C6EVM Features

Overview

The TAS5508-5122C6EVM PurePath Digital™ customer evaluation module demonstrates two

integrated circuits TAS5508 and TAS5122DCA from Texas Instruments (TI).

TAS5508PAG is a high performance 32 bit (24 bit input) multichannel PurePath Digital™ Pulse

Width Modulator (PWM) based on Equibit™ technology with new fully symmetrical AD

modulation scheme. The device also has Digital Audio Processing (DAP) that provides 48-bit

signal processing, advanced performance and a high level of system integration. The device has

interfaces for headphone output and Power Supply Volume Control (PSVC).

TAS5122DCA is a high performance digital amplifier power stage designed to drive two 8-

Ω

loudspeakers up to 40 W (10%THD+N) in BTL configuration or four 4-

Ω loudspeakers up to 20

W (10%THD+N) in Single Ended configuration. It contains integrated gate-drivers, eight matched

and electrically isolated enhancement-mode N-channel power DMOS transistors and protec-

tion/fault-reporting circuitry.

This EVM is configured with five SE channels for the satellites and one BTL channel for the

subwoofer.

The TAS5508-5122C6EVM, together with a TI input board, is a complete 6-channel digital audio

amplifier system which includes digital input (S/PDIF), analog inputs, interface to PC and DAP

features like digital volume control, input and output mixers, automute, equalization, tone

controls, loudness, dynamic range compression and PSVC output. There are configuration

options for stereo line level output, stereo headphone output and power stage failure protection.

The system was design for home theater applications such as DVD minicomponent systems,

home theater in a box (HTIB), DVD receivers or Plasma Display Panels (PDP).

Figure 1-1. Complete PurePath Digital™ System

• 6-channel PurePath Digital™ evaluation module design

• Self-contained protection system (short circuit & thermal)

• Standard I2S and I2C / Control connector for TI Input board

• Double-sided plated-through PCB layout

Overview

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SLEU058 – October 2004