MOSA

MS6894

Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection

REV 1.0

1

www.mosanalog.com

Mono 1.1W, Fully Differential Input

Excellent PSRR, Low Voltage Operation

Selectable Shutdown Logic Level

FEATURES

•PSRR at 217Hz, 80dB at 5V

•Operation range: 2.5V~5.5V

•Shutdown Current 0.1uA at 5V

•Output power, THD+N=1%

•Unity-gain stable

•Space-saving MSOP10, enhance thermal pad

APPLICATIONS

•Portable electronic devices

•PDAs

•Communication headsets

•Cross-reference:

LM4894

DESCRIPTION

The MS6894 is a fully differential power amplifier that can drive 1.1W of continuous average power into a mono 8

bridged-tied load (BTL). Operation with 2.5V supply, it can drive 200mw into a mono 8 . The shutdown may be

enabled by either logic high or logic low that depending on shutdown mode selection. The BTL configuration

eliminates the need for external coupling capacitors on the output in most applications. The MS6894 is unity-gain

stable and can be configured by external gain-setting resistors.

The MS6894 has good feature for portable equipment, these features include the fully differential input, low voltage

operation, micropower consumption shutdown mode, enhance thermal pad and small package MSOP10, make the

MS6894 ideally suited for use in portable electronic equipments.

BLOCK DIAGRAM

Shutdown control

SD

SD Mode

Status

Shutdown

On

On

Shutdown

0

0

1

1

0

1

0

1

SD Mode

-IN

BP

SD

Vo2

+IN

Bias

Vo1

V

DD

GND

1

5

3

2

7

6

10

4

+

-

-

+

Common

mode

7