TS4994 datasheet(1/31 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 / 31 page

April 2005

Revision 4

1/31

■ Differential inputs

■ Near zero pop & click

■ 100dB PSRR @ 217Hz with grounded inputs

■ Operating from V

CC = 2.5V to 5.5V

■ 1W RAIL to RAIL output power @ Vcc=5V,

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

Ω 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 DFN10 3x3, 0.5mm pitch &

MiniSO8

■ All lead-free packages

Description

The TS4994 is an audio power amplifier capable

of delivering 1W of continuous RMS output power

into an 8

Ω load @ 5V. Thanks to its differential

inputs, it exhibits outstanding noise immunity.

An external standby mode control reduces the

supply current to less than 10nA. A STBY MODE

pin allows the standby pin to be active HIGH or

LOW (except in the MiniSO8 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 has been designed for high quality

audio applications such as mobile phones and

requires few external components.

Pin Connections (top view)

Applications

■ Mobile phones (cellular / cordless)

■ Laptop / notebook computers

■ PDAs

■ Portable audio devices

■

Order Codes

TS4994IQT - DFN10

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

TS4994IST - MiniSO8

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

Part Number

Temperature Range

Package

Packaging

Marking

TS4994IQT

-40°C to +85°C

DFN10

Tape & Reel

K994

TS4994IST

-40°C to +85°C

MiniSO8

Tape & Reel

K994

1W Differential Input/Output Audio Power Amplifier

with Selectable Standby

TS4994

类似零件编号 - TS4994

制造商	部件名	数据表	功能描述
Texas Instruments	TS4994	485Kb / 35P	1W differential input/output audio power amplifier with selectable standby
STMicroelectronics	TS4994	479Kb / 35P	1W differential input/output audio power amplifier with selectable standby December 2006 Rev 6
	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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类似说明 - TS4994

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