Boosting audio quality with 3D effects

on multimedia PC notebooks

www.st.com/stdlinear

TS4982

Highly-integrated complete 2 W stereo audio subsystem

The TS4982 integrates all analog and mixed-signal audio

functions needed in high-end PC notebooks or portable

audio multimedia applications.

The TS4982 uses an enhanced referenced-ground stereo

headset drive with independent shutdown control and

dedicated audio inputs for both outputs.

In addition, a built-in internal 4-step gain control for the

loudspeaker amplifier and a fixed 3.5 dB gain for the

headphone amplifier minimize external component needs.

The TS4982’s small 5x5 QFN package provides optimal

space saving on your PCB.

Key features

High-quality 2 W stereo output power into 4

„

Ω load per

channel

Ground-referenced 100 mW stereo headphone drive

„

PC-beep input system detection

„

Four selectable gain settings

„

Enhanced pop-and-click reduction circuitry

„

Target applications

PC notebooks

„

Tablet PCs

„

Multimedia portable audio players

„

Key benefits

Selectable level of impressive 3D audio effects on

„

loudspeakers

High audio quality class AB 2x 2 W stereo speaker

„

amplifier

No bulky output capacitors required thanks to

„

referenced-to-ground headset drive

Complete audio subsystem for notebooks

„

The TS4982 is intended for use with the Microsoft Windows Vista operating system. It is designed with an advanced

BICMOS process. The TS4982’s 3D-effect enhancement is programmed through a dual digital-input interface that

provides greater flexibility on each audio output channel.