MOSA

MS6333

16-Bit Stereo Audio DAC & Headphone Driver

REV 7

10/13

www.mosanalog.com

A MP3 with FM application

Audio

DAC

MS6333

-

+

-

+

HP

Driver

MCU

+

MP3

Decoder

Volume

Controller

-79~15dB

FM

Module

MS6257

Mute

Fig.5

MP3 with FM block diagram

MS6333 combined with FM function by using MS6257 as volume controller (-79dB to +15dB)

DVDD

DGND

BCK

WS

DATA

MUTE

100K

1uF

2.2uF

300K

PD

47uF

CAP

MP3

Decoder

Supply

0.1uF

100uF

0.1uF

0.1uF

MCU

MS6333

FM

module

FM mode:

47uF

32Ω

Headphone

L-IN

L-OUT

VSS

SDA

R-IN

R-OUT

VDD

SCL

MS6257

1

2

3

5

6

7

8

4

FM-L

FM-R

Fig.6

FM application circuit using MS6333 and MS6257.

Operation:

It may have two sources to play, one is DAC, the other is LINE-IN. To play DAC, the LINE-IN signal (such as from

FM module and MS6257, MS6257 is a stereo audio volume controller) must be muted. To play LINE-IN, the last input

/MUTE should keep HIGH.