TS4997 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS4997

2 x 1W differential input stereo audio amplifier with programmable 3D effects

STMicroelectronics 

TS4997

2 x 1W differential input stereo audio amplifier

with programmable 3D effects

Features

■ Operating range from VCC= 2.7V to 5.5V

■ 1W output power per channel @ VCC=5V,

THD+N=1%, RL=8Ω

■ Ultra low standby consumption: 10nA typ.

■ 80dB PSRR @ 217Hz with grounded inputs

■ High SNR: 106dB(A) typ.

■ Fast startup time: 45ms typ.

■ Pop&click-free circuit

■ Dedicated standby pin per channel

■ Lead-free QFN16 4x4mm package

Applications

■ Cellular mobile phones

■ Notebook and PDA computers

■ LCD monitors and TVs

■ Portable audio devices

Description

The TS4997 is designed for top-class stereo

audio applications. Thanks to its compact and

power-dissipation efficient QFN16 package with

exposed pad, it suits a variety of applications.

With a BTL configuration, this audio power

amplifier is capable of delivering 1W per channel

of continuous RMS output power into an 8Ω load

@ 5V.

3D effects enhancement is programmed through

a two digital input pin interface that allows more

flexibility on each output audio sound channel.

QFN16 4x4mm

Pin connections (top view)

3D0 3D1 BYP VCC

16 15 14 13

LIN- 1

LIN+ 2

RIN+ 3

RIN- 4

12 LOUT-

11 LOUT+

10 ROUT+

9 ROUT-

56 78

GND GND STBYR STBYL

Each output channel (left and right), also has its

own external controlled standby mode pin to

reduce the supply current to less than 10nA per

channel. The device also features an internal

thermal shutdown protection.

The gain of each channel can be configured by

external gain setting resistors.

February 2007

Rev 2

1/34

www.st.com

34

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