MOSA

MS6863

Dual 2W Power Amplifiers with Stereo Headphone

REV 4

1/14

www.mosanalog.com

Dual 2W Power Amplifiers / Stereo Headphone

Low Voltage, Pop Noise Free Function

FEATURES

‧

Operation range: 2.4V ~ 6.5V

‧

Shutdown Current 0.4uA at 5V

‧

Output power, THD+N=1%

‧

Headphone sense

‧

Unity-gain stable

‧

pop noise free control (extra function for pin7)

‧

Space-saving TSSOP20, enhance thermal pad

APPLICATIONS

‧

Desktop computer’s sound card

‧

Portable audio devices

‧

Portable digital TV

‧

MP3 peripheral

‧

Handheld games

‧

Cross-reference:

LM4863

DESCRIPTION

The MS6863 is a low distortion power amplifier that can drive 2*2W of continuous average power into a dual 4Ω

between dual BTL and stereo SE modes utilizing a headphone sense pin. The BTL configuration eliminates the need

for external coupling capacitors on the output in most applications. The unity gain stable MS6863’s gain is set by

external gain-setting resistors.

The MS6863 has good feature for portable equipment, these features include the low voltage operation, micropower

consumption shutdown mode, enhance thermal pad and small package TSSOP20, make the MS6863 ideally suited for

use in portable audio equipments. The MS6863 has an extra selection for pin7 to achieve pop noise free in shutdown

control.

BLOCK DIAGRAM

SD

A2

-

+

+INA

GND

V

DD

BYPASS

+INB

+OUT A

-OUT B

-OUT A

+OUT B

A1

-

+

B2

-

+

B1

-

+

-INA

-INB

HP-IN

Power

Manage