MOSA ELECTRONICS
FEATURES
‧
Voltage Output
‧
‧
‧
‧
‧
‧
‧
‧
‧
‧
‧
Space saving package (SOP8)
Low power consumption
Low total harmonic distortion
Wide dynamic range(16-bit resolution)
No zero crossing distortion
Wide operating temperature range(-40℃ to 85℃)
‧Easy
application :
MS6311
Stereo Audio DAC
single 2.7 to 5.5 rail power supply
output and bias current are proportional to supply voltage
integrated current-to-voltage converter
Internal bias current ensures maximum dynamic range
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
The full scale output voltage can be mask optioned
Cost efficient
APPLICATIONS
VCD Player, DVD Player, CD-ROM, DVD-ROM, CD-RW, DVD-RW, Motherboard.
DESCRIPTION
The MS6311 is a 16-bit voltage-output Digital-to-Analog Converter(DAC). The MS6311 is fabricated in a 0.8
µ
m
CMOS process and features extremely low power dissipation, small package size and easy application. The accuracy of
the matched coarse current sources, combined with the unique symmetrical decoding method, preclude zero-crossing
distortion and ensures high quality audio reproduction. These unique features, combined with its exceptional
performance, make the MS6311 ideally suited for use in digital audio equipment. MS6311 is pin and function
compatible with the Philips, TDA1311.
PINNING
Symbol
BCK
WS
DATA
GND
V
DD
V
OL
n.c.
V
OR
Pin
1
2
3
4
5
6
7
8
Description
bit clock input
word select input
data input
ground
positive supply voltage
left channel output
not connected
right channel output
BCK
1
WS
2
DATA
3
GND
4
Pin configuration
8
V
OR
MS6311
7
n.c.
6
V
OL
5
V
DD
-
1
-
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MOSA ELECTRONICS
BLOCK DIAGRAM
I
BL
MS6311
Stereo Audio DAC
R1
2K
-
+
Vref
6
OP1
V
OUT
left
LEFT OUTPUT LATCH
RIGHT OUTPUT LATCH
I
BR
R2
2K
LEFT BIT SWITCHES
RIGHT BIT SWITCHES
-
+
OP2
8
V
OUT
right
11-BIT
PASSIVE
DIVIDER
32 (5-BIT)
MATCHED
CURRENT
SOURCES
32 (5-BIT)
MATCHED
CURRENT
SOURCE
11-BIT
PASSIVE
DIVIDER
Vref
Iref
Iref
I
BL
Iref I
BR
R4
≅
33K
Vref
LEFT INPUT LATCH
REFERENCE
SOURCE
BCK
WS
1
2
Rref
11K
R3
≅
22K
5
CONTROL
&
TIMING
RIGHT INPUT LATCH
V
DD
100nF
DATA 3
4
GND
Fig.1
Block diagram.
LIMITING VALUES
Symbol
V
DD
Tsig
T
XTAL
T
AMB
Ves
Parameter
Positive Supply Voltage
Storage Temperature Range
Maximum Crystal Temperature
Operating Ambient Temperature Range
Electrostatic Handling
Min
-
-55
-
-40
-2000
Max
6
+150
+150
+85
2000
Unit
V
℃
℃
℃
V
-
2
-
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MOSA ELECTRONICS
ELECTRICAL CHARACTERISTICS
(Ta=25℃, V
DD
=5V)
Symbol
V
DD
I
DD
Parameter
Positive Supply Voltage
Operating Current
at code 0000H
Conditions
Min
2.7
-
Typ
5
3.4
MS6311
Stereo Audio DAC
Max
5.5
6.0
Unit
V
mA
DIGITAL INPUTS (WS, BCK, DATA)
Symbol
Parameter
Conditions
V
I
= 0.8V
V
I
= 2.4V
Min
-
-
-
-
-
-
-
54
15
15
12
2
2
12
Typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
10
10
18.4
18.4
384
12
12
-
-
-
-
-
-
-
Unit
l
I
IL
l
Input Leakage Current LOW
l
I
IH
l
Input Leakage Current HIGH
f
BCK
Input Clock Frequency
BR
Bit Rate Data Input (Pin 3)
Word Select Input (Pin 2)
Rise Time
Fall Time
Bit Clock Cycle Time
Bit Clock High Time
Bit Clock Low Time
Data Set-up Time
Data Hold Time to Bit Clock
Word Select Hold Time
Word Select Set-up Time
µ
A
µ
A
MHz
Mbits/s
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
f
WS
t
r
t
f
t
C
r
t
HB
t
LB
t
SD
t
HD
t
HW
t
SW
ANALOG OUTPUTS (V
OL
,V
OR
)
Symbol
Res
V
FS
T
CFS
V
DC
THD
THD
CS
Resolution
Full Scale Output Voltage
Full Scale Temperature Coefficient
at Analog Outputs ; V
OL
, V
OR
Output Bias
Total Harmonic Distortion
Total Harmonic Distortion
Channel Separation
note 1
a-weighted at code
0000H
including noise
at 0 dB; note 1
including noise
at -60 dB; note 1
V
FS
=0.4V
DD
Parameter
Conditions
Min
-
1.8
-
-
-
-
-
-
75
-
-
86
Typ
-
2.0
Max
16
2.2
-
-
-63
0.07
-24
6
-
0.3
-
-
Unit
bits
V
10-
V
dB
﹪
dB
﹪
dB
dB
16
±
400
2.5
-68
0.04
-30
3
80
0.2
l
d I
O
l
Unbalance Between Outputs
l
t
d
l
Time Delay Between Outputs
S/N
Signal-to-Noise Ratio
±
0.2
92
µ
s
dB
Note :
1.Measured with 1kHz sinewave generated at sampling rate of 192 kHz.
-
3
-
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MOSA ELECTRONICS
TIMING AND DATA FORMAT
MS6311
Stereo Audio DAC
The MS6311 accepts input serial data formats of 16-bit word length. Left and right data words are time
multiplexed. The MSB (bit 1) 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). The reference voltage Vref (Fig. 1)
is approximately 2/3 V
DD
. In this way the maximum dynamic range is achieved over the entire power supply range.
WS
t
r
t
HB
t
f
LEFT
RIGHT
t
LB
t
HW
t
SW
BCK
t
cr
LSB
MSB
t
SD
t
HD
DATA
Fig.2
Timing and input signals.
WS
LEFT
RIGHT
BCK
DATA
2
1
0
15
MSB
14
13
2
1
0
LSB
15
MSB
14
13
2
1
0
LSB
Fig.3
Format of input signals.
MEASUREMENT BLOCK DIAGRAM
R-ch
Pattern
Generator
Generate
sinewave pattern for
BCK.WS.DATA
DAC
L-ch
OPAmp
f = 1 kHz
2Vp-p
sinewave
Analysis
Equipment
AC Level(Vrms)
THD
THD+N
MS6311
NOTE : THD and THD+N is measured by HP AUDIO ANALYZER and FFT Analysis.
-
4
-
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MOSA ELECTRONICS
APPLICATION INFORMATION
Basic application example
MS6311
Stereo Audio DAC
A typical example of a CD-application with the MS6311 is shown in Fig.4. It features typical decoupling components
and a second-order analog post-filter (smoothing filter) stage providing a line output.
420pF
1
2
3
4
BCK
WS
DATA
GND
VoR
n.c.
VoL
V
DD
8
7
6
5
420pF
50k
50k
50k
50k
Headphone
(32Ω)
MS6308
100nF
MS6311
10Ω
V
DD
47uF
100nF
Headphone
(32Ω)
MS6308
100nF
Fig.4
Note :
Example of a 2nd order filter application.
No external capacitor loading is allowed at the output pins 6 and 8.
EXTERNAL DIMENSIONS
4.8
8
5
6.0 3.9
1
4
Unit : mm
Tolerance : 0.1mm
1.27
0.42
0.68
1.4
0.22
1.27
0.42
0.23
-
5
-
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