TS4995 datasheet(1/26 Pages) STMICROELECTRONICS

部件名	TS4995

功能描述	1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain

PDF	26 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 26 page

March 2008

Rev 3

1/26

26

TS4995

1.2 W fully differential audio power amplifier

with selectable standby and 6 dB fixed gain

Features

■ Differential inputs

■ 90 dB PSRR @ 217 Hz with grounded inputs

■ Operates from VCC = 2.5 V to 5.5 V

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

THD+N=1%, F=1 kHz, with an 8

Ω load

■ 6 dB integrated fixed gain

■ Ultra-low consumption in standby mode

(10 nA)

■ Selectable standby mode (active low or active

high)

■ Ultra-fast startup time: 10 ms typ. at VCC=3.3 V

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

diameter)

■ Ultra-low pop and click

Applications

■ Mobile phones (cellular / cordless)

■ PDAs

■ Laptop / notebook computers

■ Portable audio devices

Description

The TS4995 is an audio power amplifier capable

of delivering 1.2 W of continuous RMS output

power into an 8

Ω load at 5 V. Thanks to its

differential inputs, it exhibits outstanding noise

immunity.

An external standby mode control reduces the

supply current to less than 10 nA. A STBY MODE

pin allows the standby pin to be active high or

low. An internal thermal shutdown protection is

also provided, making the device capable of

sustaining short-circuits.

The TS4995 features an internal fixed gain at 6dB

which reduces the number of external

components on the application board.

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.

The TS4995 is specifically designed for high

quality audio applications such as mobile phones

and requires few external components.

TS4995 - Flip chip 9

Pin connections (top view)

V

IN+

V

O-

V

CC

V

IN-

V

O+

Gnd

1

2

3

76

5

4

8

Bypass

Stdby

Stdby Mode

9

V

IN+

V

O-

V

CC

V

IN-

V

O+

Gnd

1

2

3

76

5

4

8

Bypass

Stdby

Stdby Mode

9

www.st.com

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