Page 1
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 1 -
www.mosanalog.com.tw
FEATURES
• Voltage Output •Easy application :
• Space saving package (SOP8) single 3 to 5.5 rail power supply
• Low power consumption output and bias current are proportional to supply voltage
• Low total harmonic distortion integrated current-to-voltage converter
• Wide dynamic range(16-bit resolution)
• No zero crossing distortion
• Wide operating tempera t ure range(-40℃ to 85℃)
• 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 0.8µm
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. MS6310 is a low cost solution.
PINNING
Symbol Pin Description
BCK 1 bit clock input
WS 2 word select input
DATA 3 data input
GND 4 ground
VDD 5 positive supply voltage
VOL 6 left channel output
n.c. 7 not connected
VOR 8 right channel output
Pin configuration
7
6
5
8
2
3
4
1
MS6311
MS6310
V
OR
n.c.
V
OL
V
DD
BCK
WS
DATA
GND
Page 2
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 2 -
www.mosanalog.com.tw
BLOCK DIAGRAM
LEFT OUTPUT LATCH
LEFT BIT SWITCHES
11-BIT
PASSIVE
DIVIDER
32 (5-BIT)
MATCHED
CURRENT
SOURCES
Iref
RIGHT OUTPUT LATCH
RIGHT BIT SWITCHES
32 (5-BIT)
MATCHED
CURRENT
SOURCE
11-BIT
PASSIVE
DIVIDER
Iref
LEFT INPUT LATCH
RIGHT INPUT LATCHCONTROL
&
TIMING
Vref
Vref
R1
R2
REFERENCE
SOURCE
IBLIref I
BR
I
BL
I
BR
-
+
-
+
1
2
3
BCK
WS
DATA
6
8
V
OUT
left
V
OUT
right
5
V
DD
4
GND
OP1
OP2
100nF
R3
R4
Rref
11K
Vref
2K
2K
≅
33K
≅
22K
Fig.1 Block diagram.
LIMITING VALUES
Symbol Parameter Min Max Unit
V
DD
Positive Supply Voltage - 6 V
Tsig Storage Temperature Range -55 +150
℃
T
XTAL
Maximum Crystal Temperature - +150
℃
T
AMB
Operating Ambient Temperature Range -40 +85
℃
Ves Electrostatic Handling -2000 2000 V
Page 3
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 3 -
www.mosanalog.com.tw
ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=5V)
Symbol Parameter Conditions Min Typ Max Unit
V
DD
Positive Supply Voltage
3 5 5.5 V
I
DD
Operating Current at code 0000H - 3.4 6.0 mA
DIGITAL INPUTS (WS, BCK, DATA)
Symbol Parameter Conditions Min Typ Max Unit
l
I IL l
Input Leakage Current LOW V
I
=
0.8V - - 10
µ
A
l
I IH l
Input Leakage Current HIGH V
I
=
2.4V - - 10
µ
A
f
BCK
Input Clock Frequency - - 18.4 MHz
BR Bit Rate Data Input (Pin 3) - - 18.4 Mbits/s
f
WS
Word Select Input (Pin 2) - - 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
ANALOG OUTPUTS (VOL,VOR)
Symbol Parameter Conditions Min Typ Max Unit
Res Resolution - - 16 bits
note 1 1.8 2.0 2.2
VFS Full Scale Output Voltage
MS6310 2.2 2.46 2.7
V
T
CFS
Full Scale Temperature Coefficient
at Analog Outputs ; V
OL
, VOR
-
±
400 -
10
-
16
VDC Output Bias - 2.5 - V
THD Total Harmonic Distortion including noise - -68 -63 dB
at 0 dB; note 2 - 0.04 0.07
﹪
THD Total Harmonic Distortion including noise - -30 -24 dB
at -60 dB; note 2 - 3 6
﹪
CS Channel Separation 75 80 - dB
l
d I
O l
Unbalance Between Outputs note 2 - 0.2 0.3 dB
l
t
d
l
Time Delay Between Outputs -
±
0.2 - µs
S/N Signal-to-Noise Ratio
a-weighted at code
0000H
86 92 - dB
Note : 1.The full scale output voltage can be mask optioned as 2.5V, 3V, 3.5V and 4V.
2.Measured with 1kHz sinewave generated at sampling rate of 192 kHz.
Page 4
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 4 -
www.mosanalog.com.tw
TIMING AND DATA FORMAT
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 IBR are each added to the full scale output current IFS 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.
RIGHT
WS
BCK
DATA
LSB MSB
trt
HBtf
t
cr
t
LB
t
HW
t
SW
LEFT
t
SD
t
HD
Fig.2 Timing and input signals.
012 15 14 13 210
MSB LSB
15 14 13 210
MSB LSB
RIGHT
LEFT
WS
BCK
DATA
Fig.3 Format of input signals.
MEASUREMENT BLOCK DIAGRAM
R-ch
L-ch
AC Level (Vrms)
THD
THD+N
Generate
sinewave pattern for
BCK.WS.DATA
MS6311
MS6310
MS6308
f = 1 kHz , 2Vp-p
sinewave
Pattern
Generator
DAC OPAmp
Analysis
Equipment
NOTE : THD and THD+N is measured by HP AUDIO ANALYZER and FFT Analysis.
Page 5
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 5 -
www.mosanalog.com.tw
APPLICATION INFORMATION
Basic application example
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.
BCK
WS
DATA
GND
VoR
n.c.
VoL
V
DD
MS6311
50k
MS6308
50k
420pF
10
Ω
V
DD
47uF 100nF
50k
MS6308
50k
420pF
100nF
100nF
1
2
3
45
6
7
8
Headphone
(32Ω)
Headphone
(32Ω)
Fig.4 Example of a 2nd order filter application.
Note : No external capacitor loading is allowed at the output pins 6 and 8.
EXTERNAL DIMENSIONS
1.27
0.42
6.0 3.9
4.8
1.4 0.22 1.27 0.42 0.23
0.68
14
58
Unit : mm
Tolerance : 0.1mm
Page 6
MOSA ELECTRONICS
MS6311 / 6310
Stereo Audio DAC
- 6 -
www.mosanalog.com.tw
TAPE AND REEL
(Unit : mm)
3.0
3.6
12.0
6.9
8.0
5.5
1.75
5.4
2.0
4.0
1.5+0.1/-0.0 DIA
0.5 Radius Typical1.5 MIN
0.30
0.3R MAX
1.7
2.0
0.05
0.05
0.05
0.3
ORDERING INFORMATION
Part
Number
Packaging
Marking
Package
Marking
Printing
Transport
Media
Description
MS6311 MS6311AS Tape and Reel
MS6310 MS6310AS
SOP8 Ink
Tube
MS 6311 A S
Package Type
Version
Product Number
MOSA Abbreviation
SOP 8 : Plastic small outline package ; 8 leads.
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