MOSA

MS6863

Dual 2W Power Amplifiers with Stereo Headphone

REV 4

13/14

www.mosanalog.com

DEMO BOARD

6

2

4

3

3

1

5

1

2

2

2

3

3

5

6

4

Function description

Label 1: Supply Input

Supply voltage range is 2.4V to 6.5V, the left of jump is positive and the right of jump is negative.

Label 2: Signal Input

Connected to audio signals.

Label 3: Speaker Output

Connected to speaker with 8ohm or 4 ohm

Label 4: Headphone Jack

Used 3.5mm diameter of headphone with 32ohm

Label 5: Shutdown Control

System is active mode when jump is close, system enters shutdown mode when jump is open.

Label 6: Shutdown Power Preparation

It is compatible for LM4863 when jump is close. This is the same as connect to ground.

When jump is open, it can be used the extra function of the MS6863. The details please refer to application information.

SE mode and BTL mode operation

The headphone controls operational mode. System enters SE mode when headphone jack is empty.

When a set of headphone plugged into the jack, the system switched to BTL mode.