March 2009

Rev 1

1/10

AN2933

Application note

Demo board user guidelines for the TS4999 filter-free stereo

2 x 2.8 W class D audio power amplifier with selectable 3D effect

Introduction

This application note concerns the TS4999 demonstration board, designed to evaluate the

stereo class D audio differential amplifier TS4999.

This document provides:

About the TS4999

The TS4999 is a fully-differential class D stereo power amplifier. It can drive up to 1.35 W

into an 8

Ω load at 5 V per channel. The device has four different gain settings utilizing two

discrete pins, G0 and G1.

Pop and click reduction circuitry provides low on/off switch noise while allowing the device to

start within 8 ms. 3D enhancement effects are selected through one digital input pin that

allows more amazing stereo audio sound.

Two standby pins (active low) allow each channel to be switched off separately.

The TS4999 is available in an 18-bump flip-chip package.

Key features of the TS4999

Ω with 10% THD+N or 0.7 W at 3.6 V into

8

Ω with 1% THD+N max.

Refer to the datasheet for complete information on the TS4999.

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