MOSA
APPLICATION INFORMATION
MP3 digital to analog converting solution
MS6323
BCK
WS
DATA
GND
VoR
1uF
CAP
1uF
VoL
V
DD
1.2nF
1nF
15k
22k
22k
68pF
39k
MS6323
16-Bits Stereo Audio DAC
100uF
Headphone
(32Ω)
MS6308
10Ω
Supply
10uF
0.1uF
100k
1uF
100k
V
REF
f
-3dB
= 17.5kHz
DC
gain
= 1.05
V
DAC out p-p
= 1.65V
V
out p-p
= 1.75V
For V
DD
= 3.3V
Fig.4
A third order lowpass filter ( Smoothing filter ) for DAC output.
MP3 DECODER
DAC
Headphone Driver
470pF
20k
MS6323
1
SUNPLUS
BCK
WS
DATA
GND
VoR
CAP
VoL
V
DD
8
7
6
5
1uF
50k
1.65V
PP
50k
0.1uF
V
RE
F
20k
2
1
3
47uF
1.65V
PP
SPCA751
STMicroelectronics
2
3
STA013
4
10uF
5
0.1uF
20k
MS6308
PHONE JACK
7
6
22k
47uF
Headphone
(32Ω)
10Ω
Supply
3.3V
AV
DD
47uF
0.1uF
450pF
Fig.5
A first order lowpass filter for DAC output.
REV1.1
7
www.mosanalog.com