MOSA

MS6853

Mono 1.9W / Stereo 300mW Power Amplifier

REV 6

14/14

www.mosanalog.com

Function description

Label 1: Supply Input

Supply voltage range is 2.7V to 6.5V, the right of jump is positive, the left 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.

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.

Circuit

L_IN

1

SD

2

HP_IN

3

GND

4

R_IN

5

R_O

6

BP

7

B_O+

8

VDD

9

L_O/B_O

10

U1

MS6853

R5

100K

R3

20K

R1

20K

R2

20K

R6

100K

R4

20K

R7

1K

1uF

C1

1uF

C2

1uF

C5

100uF

C6

100uF

C4

1uF

1

2

JP1

VDD

J1

HEADPHONE

LS1

SPEAKER

R8

1K

1

2

JP2

SHUTDOWN

C7

0.1uF

1

2

JP3

Lin

1

2

JP4

Rin

1

2

3

JP5

OUTPUT