ETC MS6323ASU

MOSA
MS6323
16-Bits Stereo Audio DAC
16-Bits Stereo Audio DAC
Low Power Consumption
Low Voltage, Excellent PSRR
FEATURES
‧Operation range: 2.7V~5.5V
‧Excellent Power Supply Rejection Ratio(PSRR)
‧Low operating current
‧Low power consumption
8mW at VDD=3.3V (Full scale output )
‧Low distortion
‧No zero crossing distortion
‧Wide dynamic range(16-bit resolution)
‧Voltage Output
‧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, CMOS input level
‧Output voltage swing is proportional to supply voltage
(VOPP=VDD/2)
‧ Cost efficient
‧ Space saving package SOP8, MSOP8
APPLICATIONS
‧Multimedia system
‧MP3, PDA, Portable Digital Audio.
DESCRIPTION
The MS6323 is a 16-bit voltage-output Digital-to-Analog Converter(DAC). It gives the excellent Power Supply
Rejection Ratio(PSRR). It features extremely low power dissipation, small package size and easy application. The
accuracy of the weight current sources, combined with the unique symmetrical decoding method, preclude zerocrossing distortion and ensures high quality audio reproduction. These unique features, combined with its exceptional
performance, make the MS6323 ideally suited for use in portable audio equipment. MS6323 is pin and function
compatible with MS6313.
PIN CONFIGURATION
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
Cap
7
Cap
BCK 1
8 VOR
WS 2
7 Cap
MS6323
DATA 3
6 VOL
GND 4
5 VDD
VOR
8
Right channel output
Pin 7 : Capacitor = 1µF (ripple rejection)
REV1
1
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MOSA
MS6323
16-Bits Stereo Audio DAC
BLOCK DIAGRAM
IBL
RF
6
LEFT OUTPUT LATCH
OP1
RIGHT OUTPUT LATCH
LEFT
VREF
RF
IBR
LEFT BIT SWITCHS
VOUT
8
RIGHT BIT SWITCHS
OP2
VOUT
RIGHT
VREF
16-BIT WEIGHT
CURRENT DIVIDER
16-BIT WEIGHT
CURRENT DIVIDER
IREF
IREF
REFERENCE
CURRENT
SOURCE
IBL
REFERENCE
CURRENT
SOURCE
7
REFERENCE
SOURCE
LEFT INPUT LATCH
BCK
IBR
CAP
1uF
VREF
1
4
WS
DATA
GND
RIGHT INPUT LATCH
2
CONTROL
&
TIMING
3
10uF
5
Fig.1
0.1uF
VDD
Block diagram.
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP
MS6323ASTR
MS6323AS
2.5k Units Tape and Reel
8-Pin SOP
MS6323ASU
MS6323AS
100 Units Tube
8-Pin SOP (lead free)
MS6323ASGTR
MS6323ASG
2.5k Units Tape and Reel
8-Pin SOP (lead free)
MS6323ASGU
MS6323ASG
100 Units Tube
8-Pin MSOP
MS6323ASMTR
6323
3.5k Units Tape and Reel
8-Pin MSOP
MS6323ASMU
6323
80 Units Tube
8-Pin MSOP (lead free)
MS6323ASMGTR
6323G
3.5k Units Tape and Reel
8-Pin MSOP (lead free)
MS6323ASMGU
6323G
80 Units Tube
REV1
2
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MOSA
MS6323
16-Bits Stereo Audio DAC
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VDD
Positive Supply Voltage
VESD
Electrostatic Handling
TSTG
Storage Temperature Range
TA
Operating Ambient Temperature Range
TJ
Rating
Unit
6
V
-2000 to 2000
-65 to 150
V
℃
-40 to 85
℃
Maximum Junction Temperature
150
℃
TS
Soldering Temperature, 10 seconds
260
℃
RTHJA
Thermal Resistance from Junction to Ambient in Free Air
SOP8
MSOP8
210
235
℃/W
OPERATING RATINGS
Symbol
VDD
Parameter
Supply Voltage
Min
Typ
Max
Unit
2.7
-
5.5
V
Min
Typ
Max
Unit
3.3V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=3.3V, VSS=0V, f=1kHz, Cap=1uF; unless otherwise specified)
Symbol
Parameter
Conditions
DC Characteristics
VCAP
Voltage at CAP
1.60
1.65
1.70
V
VDC
Output DC level
1.60
1.65
1.70
V
VFS
Full scale output voltage
VFS=0.5VDD
1.5
1.65
1.8
Vpp
IQ
Quiescent current
At code 0000H
-
2.0
2.3
mA
PSRR
Power supply rejection ratio
CAP=1uF, f=100Hz
45
50
-
dB
CAP=10uF, f=100Hz
63
68
-
dB
CS
Channel separation
78
84
-
dB
AC Characteristics
Res
Resolution
-
-
16
bits
THD+N
Total harmonic distortion plus
noise
-
-66
-62
dB
-
0.05
0.08
%
S/N
Signal-to-noise ratio
86
92
-
dB
REV1
3
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MOSA
MS6323
16-Bits Stereo Audio DAC
2.7V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=2.7V, VSS=0V, f=1kHz, Cap=1uF; unless otherwise specified)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
DC Characteristics
VCAP
Voltage at CAP
VDC
Output DC level
VFS
Full scale output voltage
IQ
Quiescent current
PSRR
Power supply rejection ratio
CS
Channel separation
1.30
1.35
1.40
V
1.30
1.35
1.40
V
1.2
1.35
1.5
Vpp
-
1.9
2.2
mA
CAP=1uF, f=100Hz
45
49
-
dB
CAP=10uF, f=100Hz
63
68
-
dB
77
83
-
dB
VFS=0.5VDD
At code 0000H
AC Characteristics
Res
Resolution
-
-
16
bits
THD+N
Total harmonic distortion plus
noise
-
-66
-62
dB
-
0.05
0.08
%
S/N
Signal-to-noise ratio
84
90
-
dB
TYPICAL PERFORMANCE CHARACTERISTICS
CHANNEL SEPARATION (dB)
THD+N (%)
QUIESCENT CURRENT (mA)
(Ta=25℃, f=1kHz, Cap=1uF; unless otherwise specified)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
Quiescent current vs. supply voltage e
THD+N vs. supply voltage
Channel separation vs. frequency
PSRR (dB)
CAP=1uF
VDD=3.3V
VRR=-20dBV
REV1
CAP=22uF
CAP=10uF
PSRR (dB)
CAP=22uF
CAP=10uF
CAP=1uF
VDD=2.7V
VRR=-20dBV
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR vs. frequency
PSRR vs. frequency
4
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MOSA
MS6323
16-Bits Stereo Audio DAC
TIMING AND DATA FORMAT
The MS6323 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 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). In this way the maximum dynamic range
is achieved over the entire power supply range.
LEFT
WS
RIGHT
tr
tHB
tf
tLB
tHW
tSW
BCK
tcr
tSD
LSB
DATA
Fig.2
tHD
MSB
Timing and input signals.
LEFT
WS
RIGHT
BCK
DATA 2
1
0
15
14
13
2
1
MSB
Fig.3
Data format (BCK, WS, DATA)
Symbol
Parameter
0
15
14
LSB
MSB
13
2
1
0
LSB
Format of input signals.
Conditions
Min
Typ
Max
Unit
VIL
Input LOW level
-
-
0.3VDD
V
VIH
Input HIGH level
0.7VDD
-
-
V
l I IL l
l I IH l
f BCK
Input Leakage Current LOW
-
-
10
Input Leakage Current HIGH
-
-
10
µA
µA
Input Clock Frequency
-
-
18.4
MHz
BR
Bit Rate Data Input
-
-
18.4
Mbits/s
fWS
Word Select Input
-
-
384
kHz
tr
tf
t Cr
t HB
t LB
t SD
t HD
t HW
t SW
Rise Time
-
-
12
ns
Fall Time
-
-
12
ns
Bit Clock Cycle Time
54
-
-
ns
Bit Clock High Time
15
-
-
ns
Bit Clock Low Time
15
-
-
ns
Data Set-up Time
12
-
-
ns
REV1
Data Hold Time to Bit Clock
2
-
-
ns
Word Select Hold Time
2
-
-
ns
Word Select Set-up Time
12
-
-
ns
5
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MOSA
MS6323
16-Bits Stereo Audio DAC
APPLICATION INFORMATION
MP3 digital to analog converting solution
MS6323
39k
BCK
VoR
WS
CAP
DATA
VoL
68pF
1uF
1uF
GND
15k
22k
22k
100uF
1.2nF
VDD
1nF
Headphone
(32Ω)
MS6308
10Ω
100k
VREF
Supply
10uF
0.1uF
100k
f-3dB = 17.5kHz
DC gain = 1.05
VDAC out p-p = 1.65V
Vout p-p = 1.75V
Fig.4
1uF
For VDD = 3.3V
A third order lowpass filter ( Smoothing filter ) for DAC output.
MP3 DECODER
DAC
Headphone Driver
470pF
20k
MS6323
1
SUNPLUS
SPCA751
VoR
8
WS
CAP
7
3
DATA
VoL
6
4
GND
VDD
1.65VPP
0.1uF
20k
2
1
2
STMicroelectronics
STA013
BCK
50k
1uF
5
MS6308
10uF
PHONE JACK
5
10Ω
3.3V
20k
7
47uF
Headphone
(32Ω)
6
22k
AVDD
47uF
Fig.5
REV1
1.65VPP
F
50k
0.1uF
Supply
47uF
3
VRE
450pF
0.1uF
A first order lowpass filter for DAC output.
6
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MOSA
MS6323
16-Bits Stereo Audio DAC
EXTERNAL DIMENSIONS
8
5
Symbol
H
E
1
A
A1
B
C
D
H
E
e
L
4
D
Dimension in mm
Min
Max
1.35
1.75
0.10
0.25
0.33
0.51
0.19
0.25
4.80
5.00
5.80
6.20
3.80
4.00
1.27 BSC
0.40
1.27
Dimension in inch
Min
Max
0.0532 0.0688
0.0040 0.0098
0.013
0.020
0.0075 0.0098
0.1890 0.1968
0.2284 0.2440
0.1497 0.1574
0.050 BSC
0.016
0.050
L
A
A1
e
B
C
SOP8
Symbol
H
A
A1
A2
B
C
D
H
E
e
L
E
Dimension in mm Dimension in inch
Min
Max
Min
Max
0.81
1.12
0.032
0.048
0.05
0.15
0.002
0.006
0.76
0.86
0.030
0.038
0.28
0.38
0.011
0.015
0.13
0.23
0.005
0.009
2.90
3.10
0.114
0.122
4.70
5.10
0.185
0.201
2.90
3.10
0.114
0.122
0.65
0.026
0.40
0.66
0.016
0.026
D
A
A2
A1
e
L
B
C
MSOP8
REV1
7
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MOSA
MS6323
16-Bits Stereo Audio DAC
TAPE AND REEL (Unit : mm)
2.0
0.30
0.05
0.05
1.5+0.1/-0.0 DIA
4.0
1.75
0.3R MAX
5.5
0.05
12.0 0.3
5.4
3.0
3.6
8.0
1.5 MIN
6.9
0.5 Radius Typical
2.0 1.7
SOP8
2.0
0.30
0.05
0.05
1.5+0.1/-0.0
4.0
1.75
0.3R MAX
5.5
0.05
12.0 0.3
3.3
5.2
8.0
1.5 MIN
0.3 Typical
4.2
3.4
1.6 1.2
MSOP8
REV1
8
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