MO
SA
MS6310
Low Cost 16-Bit Stereo Audio DAC
REV1
1
www.mosanalog.com.tw
Low Cost 16-Bit Stereo Audio DAC
FEATURES
Cost effective
Low distortion
No zero crossing distortion
Output voltage swing is proportional to supply voltage (V
OPP
=V
DD
/2)
Space saving package SOP8
Fast setting time permits 2*, 4*, and 8* oversampling (serial input) or double speed operation at 4* oversampling
Compatible with most of the Japanese input formats; time multiplexed, two's complement, TTL input level
APPLICATIONS
VCD Player, DVD Player
CD-ROM, DVD-ROM, CD-RW, DVD-RW
DESCRIPTION
The MS6310 is a voltage-output Digital-to-Analog Converter (DAC). The accuracy of the weight current sources,
combined with the unique symmetrical decoding method, preclude zero-crossing distortion and ensures high quality
audio reproduction. The MS6310 is pin and function compatible with MS6311, Philips TDA1311.
PIN CONFIGURATION
Symbol Pin
Description
BCK
1
Bit clock input
WS
2
Word select input
DATA 3 Data
input
GND 4
Ground
V
DD
5
Positive supply voltage
V
OL
6
Left channel output
n.c. 7
not
connected
V
OR
8
Right channel output
7
6
5
8
2
3
4
1
MS6310
V
OR
n.c.
V
OL
V
DD
BCK
WS
DATA
GND
MO
SA
MS6310
Low Cost 16-Bit Stereo Audio DAC
REV1
2
www.mosanalog.com.tw
BLOCK DIAGRAM
LEFT OUTPUT LATCH
RIGHT OUTPUT LATCH
LEFT BIT SWITCHS
RIGHT BIT SWITCHS
16-BIT MATCHED
CURRENT DIVIDER
16-BIT MATCHED
CURRENT DIVIDER
V
REF
LEFT INPUT LATCH
RIGHT INPUT LATCH
CONTROL
&
TIMING
BCK
WS
DATA
REFERENCE
SOURCE
I
BL
I
REF
I
BR
1
2
3
5
4
V
DD
GND
10uF
R
F
I
BR
R
F
I
BL
V
REF
V
REF
V
REF
V
OUT
LEFT
6
8
V
OUT
RIGHT
OP1
OP2
V
REF
0.1uF
Fig.1 Block diagram.
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP
MS6310CSTR
MS6310CS
2.5k Units Tape and Reel
8-Pin SOP
MS6310CSU
MS6310CS
100 Units Tube
8-Pin SOP (lead free)
MS6310CSGTR
MS6310CSG
2.5k Units Tape and Reel
8-Pin SOP (lead free)
MS6310CSGU
MS6310CSG
100 Units Tube
MO
SA
MS6310
Low Cost 16-Bit Stereo Audio DAC
REV1
3
www.mosanalog.com.tw
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter Rating
Unit
V
DD
Positive Supply Voltage
6
V
V
ESD
Electrostatic Handling
-2000 to 2000
V
T
STG
Storage Temperature Range
-65 to 150
T
A
Operating Ambient Temperature Range
-40 to 85
T
J
Maximum Junction Temperature
150
T
S
Soldering Temperature, 10 seconds
260
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
SOP8
210
/W
OPERATING RATINGS
Symbol Parameter Min Typ Max Unit
V
DD
Supply Voltage
2.7
-
5.5
V
5V ELECTRICAL CHARACTERISTICS
(Ta=25, V
DD
=5V, f=1kHz; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
V
DC
Output DC level
2.3
2.5
2.7
V
V
FS
Full scale output voltage
V
FS
=0.5V
DD
2.3 2.5 2.7 Vpp
I
Q
Quiescent current
At code 0000H
-
3.4
6
mA
CS Channel
separation
75 80 - dB
AC Characteristics
Res Resolution
-
- 16 bits
- -57 -51 dB
THD+N
Total harmonic distortion plus
noise
- 0.14
0.28
%
S/N
Signal-to-noise ratio
A-weighted at code 0000H
80
85
-
dB
MO
SA
MS6310
Low Cost 16-Bit Stereo Audio DAC
REV1
4
www.mosanalog.com.tw
TIMING AND DATA FORMAT
The MS6310 accepts input serial data formats of 16-bit word length. Left and right data words are time
multiplexed. The MSB must always be first. The format of data input is shown in Figs. 2 and 3. With a HIGH level on
the word select input (WS), data is placed in the left input register and with LOW level on the WS input, data is placed
in the right register (Fig. 1). The data in the input registers are simultaneously latched in the output registers which
control the bit switches. Internal bias currents I
BL
and I
BR
are each added to the full scale output current I
FS
in order to
achieve the maximum dynamic range at the outputs of OP1 and OP2 (Fig. 1). In this way the maximum dynamic range
is achieved over the entire power supply range.
RIGHT
WS
BCK
DATA
LSB
MSB
t
r
t
HB
t
f
t
cr
t
LB
t
HW
t
SW
LEFT
t
SD
t
HD
Fig.2 Timing and input signals.
0
1
2
15
14
13
2
1
0
MSB
LSB
15
14
13
2
1
0
MSB
LSB
RIGHT
LEFT
WS
BCK
DATA
Fig.3 Format of input signals.
Data format (BCK, WS, DATA)
Symbol Parameter
Conditions Min
Typ
Max
Unit
V
IL
Input LOW level
-
-
0.3V
DD
V
V
IH
Input HIGH level
0.7V
DD
- - V
l
I
IL
l
Input Leakage Current LOW
-
-
10
A
l
I
IH
l
Input Leakage Current HIGH
-
-
10
A
f
BCK
Input Clock Frequency
-
-
18.4
MHz
BR
Bit Rate Data Input
-
-
18.4
Mbits/s
f
WS
Word Select Input
-
-
384
kHz
t
r
Rise Time
-
-
12
ns
t
f
Fall Time
-
-
12
ns
t
C
r
Bit Clock Cycle Time
54
-
-
ns
t
HB
Bit Clock High Time
15
-
-
ns
t
LB
Bit Clock Low Time
15
-
-
ns
t
SD
Data Set-up Time
12
-
-
ns
t
HD
Data Hold Time to Bit Clock
2
-
-
ns
t
HW
Word Select Hold Time
2
-
-
ns
t
SW
Word Select Set-up Time
12
-
-
ns
MO
SA
MS6310
Low Cost 16-Bit Stereo Audio DAC
REV1
5
www.mosanalog.com.tw
APPLICATION INFORMATION
Basic application example
A typical example of a CD-application with the MS6310 is shown in Fig.4. It features typical decoupling components
and a second-order analog post-filter (smoothing filter) stage providing a line output.
BCK
WS
DATA
GND
VoR
N.C
VoL
V
DD
MS6310
50k
MS6308
50k
420pF
10
V
DD
47uF
0.1uF
50k
MS6308
50k
420pF
100pF
100pF
1
2
3
4
5
6
7
8
Headphone
(32
)
Headphone
(32
)
Fig.4 Example of a 2nd order filter application.
VCD player
BCK
WS
DATA
GND
VoR
N.C
VoL
V
DD
MS6310
1
2
3
4
5
6
7
8
DAC
Dual Operational Amplifier
100k
1uF
180pF
(2.0 Vrms)
4558
1
2
3
51k
V
RE
F
22k
22k
51k
7
5
6
10k
V
OR
8
4
10uF
V
CC
=12V
V
OL
10k
10uF
1uF
1uF
180pF
100k
V
DD
=5V
Fig.5 A 1st order filter for VCD player.
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