TS4994FC View Datasheet(PDF) - STMicroelectronics

Part Name

Description

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TS4994FC

1.2 W differential input/output audio power amplifier with selectable standby

STMicroelectronics 

TS4994FC

1.2 W differential input/output audio power amplifier

with selectable standby

Features

■ Differential inputs

■ Near-zero pop & click

■ 100dB PSRR @ 217Hz with grounded inputs

■ Operating range from VCC = 2.5V to 5.5V

■ 1.2W rail-to-rail output power @ VCC = 5V,

THD = 1%, F = 1kHz, with 8Ω load

■ 90dB CMRR @ 217Hz

■ Ultra-low consumption in standby mode (10nA)

■ Selectable standby mode (active low or active

high)

■ Ultra fast startup time: 15ms typ.

■ Available in 9-bump flip-chip (300mm bump

diameter)

■ Lead-free package

TS4994EIJT - Flip-chip (9 bumps)

Gnd

VO-

7

6

5 VO+

Bypass 8 9 4 Stdby

VIN+ 1

2

3 VIN-

VCC Stdby Mode

The device is equipped with common mode

feedback circuitry allowing outputs to be always

biased at VCC/2 regardless of the input common

mode voltage.

Description

The TS4994 is an audio power amplifier capable

of delivering 1W of continuous RMS output power

into an 8Ω load @ 5V. Due to its differential inputs,

it exhibits outstanding noise immunity.

An external standby mode control reduces the

supply current to less than 10nA. An STBY

MODE pin allows the standby to be active HIGH

or LOW. An internal thermal shutdown protection

is also provided, making the device capable of

sustaining short-circuits.

The TS4994 is designed for high quality audio

applications such as mobile phones and requires

few external components.

Applications

■ Mobile phones (cellular / cordless)

■ Laptop / notebook computers

■ PDAs

■ Portable audio devices

Order codes

Part number

Temperature range

Package

Packaging

Marking

TS4994EIKJT

-40°C, +85°C

FC9 with back

coating

Tape & reel

A94

TS4994EIJT

Lead free flip-chip9

A94

December 2006

Rev 2

1/35

www.st.com

35

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