TS4994 datasheet(1/35 Pages) STMICROELECTRONICS

部件名	TS4994

功能描述	1W differential input/output audio power amplifier with selectable standby

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 35 page

December 2006

Rev 6

1/35

35

TS4994

1W 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

■ 1W rail-to-rail output power @ VCC =5V,

THD = 1%, F = 1kHz, with 8

Ωload

■ 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 DFN10 3x3 (0.5mm pitch) &

MiniSO-8

■ All lead-free packages

Description

The TS4994 is an audio power amplifier capable

of delivering 1W of continuous RMS output power

into an 8

Ωload @ 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 (except in the MiniSO-8 version). An

internal thermal shutdown protection is also

provided, making the device capable of sustaining

short-circuits.

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 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

TS4994IQT - DFN10

Pin connections (top view)

1

2

3

4

5

10

9

8

7

6

V

IN -

V

O+

STBY

V

DD

V

IN +

STBY MODE

BYPASS

V

O-

GND

N/C

1

2

3

4

5

1

2

3

4

5

10

9

8

7

6

10

9

8

7

6

V

IN -

V

O+

STBY

V

DD

V

IN +

STBY MODE

BYPASS

V

O-

GND

N/C

4

3

2

1

V

IN+

V

IN-

V

O+

GND

Vcc

V

O-

BYPASS

5

6

7

8

STBY

4

3

2

1

V

IN+

V

IN-

V

O+

GND

Vcc

V

O-

BYPASS

5

6

7

8

STBY

TS4994IST - MiniSO-8

Part number

Temperature range

Package

Packing

Marking

TS4994IQT

-40°C to +85°C

DFN10

Tape & reel

K994

TS4994IST

MiniSO-8

K994

www.st.com

类似零件编号 - TS4994

制造商	部件名	数据表	功能描述
STMicroelectronics	TS4994	762Kb / 31P	1W Differential Input/Output Audio Power Amplifier with Selectable Standby
Texas Instruments	TS4994	485Kb / 35P	1W differential input/output audio power amplifier with selectable standby
STMicroelectronics	TS4994EIJT	673Kb / 35P	1.2 W differential input/output audio power amplifier with selectable standby 12-Dec-2006
	TS4994EIKJT	673Kb / 35P	1.2 W differential input/output audio power amplifier with selectable standby 12-Dec-2006
	TS4994FC	673Kb / 35P	1.2 W differential input/output audio power amplifier with selectable standby 12-Dec-2006

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