Page 1
MOSA ELECTRONICS
MS6610
Stereo Audio DAC
- 1 -
www.mosanalog.com.tw
FEATURES
• Current 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
• Wide dynamic range(16-bit resolution)
• Fast setting time permits 2*, 4*, and 8* oversampling(serial input) or double speed operation at 4* oversampling
• Internal bias current ensures maximum dynamic range
• Wide operating temperature range of -40℃ to 85℃
• Internal timing and control circuits
• Compatible with most of the Japanese input formats; time multiplexed, two's complement, TTL
• No zero crossing distortion
APPLICATIONS
VCD Player, DVD Player.
DESCRIPTION
The MS6610 is a 16-bit current-output Digital-to-Analog Converter(DAC). The MS6610 is fabricated in a 0.8µm
CMOS process and features extremely low power dissipation, small package size and ease of 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 MS6610 ideally suited for use in digital audio equipment. MS6610 is pin and function
compatible with the Philips, TDA1545.
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
IOL 6 left channel output
V
REF
7 referenc e voltage output
IOR 8 right channel output
7
6
5
8
2
3
4
1
MS6610
I
OR
V
REF
I
OL
V
DD
BCK
WS
DATA
GND
Pin configuration
Page 2
MOSA ELECTRONICS
MS6610
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
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
OP1
OP2
I
OL
I
OR
1nF
C2
3.9K
R2
1nF
C1
3.9K
R1
ground
C3
100nF
7
Rref
11K
R4
33K
R3
22K
+C4
1uF
Vref
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
MS6610
Stereo Audio DAC
- 3 -
www.mosanalog.com.tw
ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=5V)
SYM PARAMETER CONDITIONS MIN TYP MAX UNIT
VDD Positive Supply Voltage 3 5 5.5 V
I
DD
Operating Current at code 0000H - 3 5 mA
PSSR Power Ripple Rejection Ratio - 30 dB
DIGITAL INPUTS (WS, BCK, DATA)
SYM PARAMETER CONDITIONS MIN TYP MAX UNIT
f
BCK
Input Clock Frequency 18.4 MHz
BR Bit Rate Data Input (Pin 3) 18.4 Mbits/s
FWS Word Select Input (Pin 2) 384 kHz
t
r
Rise Time 12 ns
t
f
Fall Time 1 2 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 INPUT (Iref)
SYM PARAMETER CONDITIONS MIN TYP MAX UNIT
Rref Reference Resistor (Fig.1) 7.4 11.0 14.6 K
ANALOG OUTPUT (IOL, IOR)
SYM PARAMETER CONDITIONS MIN TYP MAX UNIT
Res Resolution 16 bits
V
DCC
DC output Voltage Compliance 2.0 VDD-1 V
I
FS
Full Scale Output Current 0.9 1.0 1.1 mA
T
CFS
Full Scale Temperature Coefficient at
Analog Outputs ; I
OL
, I
OR
±
400
10
-
16
Ptot Total Power Dissipation at code 0000H 15 mW
I bias Bias Current (adjustable) 643 714 785
µ
A
THD Total Harmonic Distortion including noise -85 -78 dB
at 0 dB 0.005 0.01
﹪
THD Total Harmonic Distortion including noise -30 -24 dB
at -60 dB 3 6
﹪
S/N Signal-to-Noise Ratio a-weighted at code
0000H
92 dB
CS Channel Separation 95 dB
Page 4
MOSA ELECTRONICS
MS6610
Stereo Audio DAC
- 4 -
www.mosanalog.com.tw
TIMING AND DATA FORMAT
The MS6610 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 LOW
level on the word select input(WS) input data is placed in the right input register and with HIGH level on the WS input
data is placed in the left register. The data in the input registers are simultaneously latched in the output registers which
control the bit switches. Internal bias currents IBL 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 output voltage V ref(Fig.
1) is 2/3 VDD. 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
MEASUREMENT BLOCK DIAGRAM
R-ch
L-ch
AC Level (Vrms)
THD
THD+N
Generate
sinewave pattern for
BCK.WS.DATA
MS6610
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
MS6610
Stereo Audio DAC
- 5 -
www.mosanalog.com.tw
APPLICATION INFORMATION
MS6308
1
2
3
V
REF
3.9k
7
5
6
10k
V
OA
8
4
100uF
100uF
V
DD
1nF
BCK
33k
8
3.9k
V
OB
10k
100uF
1nF
6
7
1
2
3
WS
DATA
MS6610
5
4
22k
1uF
0.1uF10uF
Fig.3 Example of application with MS6610 (audio DAC)
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
MS6610
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
Tape and Reel
MS6610 MS6610BS SOP8 Ink
Tube
MS 6610 B S
Package Type
Version
Product Number
MOSA Abbreviation
SOP 8 : Plastic small outline package ; 8 leads.
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