TS4999 Просмотр технического описания (PDF) - STMicroelectronics

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TS4999

Filter-free stereo 2.8 W class D audio power amplifier with selectable 3D sound effects

STMicroelectronics 

TS4999

Filter-free stereo 2.8 W class D audio power amplifier

with selectable 3D sound effects

Features

■ Operates from VCC = 2.4 to 5.5 V

■ Dedicated standby mode active low/channel

■ Output power per channel: 2.8 W at 5 V into

4 Ω with 10% THD+N or 0.7 W at 3.6 V into 8 Ω

with 1% THD+N max.

■ Selectable 3D sound effect

■ Four gain setting steps: 3.5, 6, 9.5 and 12 dB

■ Low current consumption

■ PSSR: 63 dB typical at 217 Hz.

■ Fast start up phase: 7.8 ms

■ Short-circuit and thermal shutdown protection

■ Flip chip 18-bump lead-free package

Applications

■ Cellular phones

■ PDAs

■ Notebook PCs

Description

The TS4999 is a stereo fully-differential class D

power amplifier. It can drive up to 1.35 W into a

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 a flip chip, 18-bump,

lead-free package.

Flip chip 18-bump package

Pin connections (top view)

LOUT-

PGND

ROUT-

LPVCC

RPVCC

LOUT+

G1

AGND

G0

STDBYL

LIN-

ROUT+

AVCC

STDBYR

RIN-

LIN+

3D

RIN+

December 2008

Rev 1

1/36

www.st.com

36

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