MOSA

MS6891

Mono 1.1W Power Amplifier with Shutdown

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www.mosanalog.com

Mono 1.1W Power Amplifier with Shutdown,

Low Voltage Operation

FEATURES

‧

Operation range: 2.5V ~ 6.5V

‧

Shutdown Current 0.1uA at 6V

‧

PSRR at 217Hz, 60dB at 5V

‧

Output power, THD+N=1%

‧

Unity-gain stable

‧

Space-saving SOP8 , MSOP8

APPLICATIONS

‧

Portable electronic devices

‧

PDAs

‧

Communication headsets

Cross-reference

LM4891

DESCRIPTION

The MS6891 is a low distortion power amplifier that can drive 1.5W（6V） of continuous average power into a

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

configuration eliminates the need for external coupling capacitors on the output in most applications. The MS6891 is

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

The MS6891 has good feature for portable equipment, these features include the low voltage operation, micropower

consumption shutdown mode, small package SOP8, MSOP8, make the MS6891 ideally suited for use in portable

electronic equipments.

BLOCK DIAGRAM

A2

-

+

-IN

GND

BP

SHDN

Vo1

+IN

A1

-

+

Bias

control

6

1

2

3

4

8

Vo2

5

7

-

+