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MOSA
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
MS6323
16-Bits Stereo Audio DAC
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 BCK WS DATA GND VDD VOL Cap 1 2 3 4 5 6 7 Pin Description Bit clock input Word select input Data input Ground Positive supply voltage Left channel output Cap
DATA 3 GND 4 BCK 1 WS 2 8 VOR 7 Cap
MS6323
6 VOL 5 VDD
VOR 8 Right channel output Pin 7 : Capacitor = 1F (ripple rejection)
REV1
1
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MOSA
BLOCK DIAGRAM
IBL
MS6323
16-Bits Stereo Audio DAC
RF 6 VOUT
LEFT
LEFT OUTPUT LATCH
RIGHT OUTPUT LATCH IBR
OP1 VREF RF 8 OP2 VREF
LEFT BIT SWITCHS
RIGHT BIT SWITCHS
VOUT
RIGHT
16-BIT WEIGHT CURRENT DIVIDER IREF REFERENCE CURRENT SOURCE
16-BIT WEIGHT CURRENT DIVIDER IREF REFERENCE CURRENT SOURCE
IBL
IBR 7 CAP
LEFT INPUT LATCH BCK 1
REFERENCE SOURCE
1uF VREF 4 GND
WS
2 CONTROL & TIMING
RIGHT INPUT LATCH 10uF 0.1uF
DATA
3
5
VDD
Fig.1
Block diagram.
ORDERING INFORMATION
Package 8-Pin SOP 8-Pin SOP 8-Pin SOP (lead free) 8-Pin SOP (lead free) 8-Pin MSOP 8-Pin MSOP 8-Pin MSOP (lead free) 8-Pin MSOP (lead free) Part number MS6323ASTR MS6323ASU MS6323ASGTR MS6323ASGU MS6323ASMTR MS6323ASMU MS6323ASMGTR MS6323ASMGU Packaging Marking MS6323AS MS6323AS MS6323ASG MS6323ASG 6323 6323 6323G 6323G Transport Media 2.5k Units Tape and Reel 100 Units Tube 2.5k Units Tape and Reel 100 Units Tube 3.5k Units Tape and Reel 80 Units Tube 3.5k Units Tape and Reel 80 Units Tube
REV1
2
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MOSA
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VESD TSTG TA TJ TS RTHJA Positive Supply Voltage Electrostatic Handling Storage Temperature Range Operating Ambient Temperature Range Maximum Junction Temperature Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air SOP8 MSOP8 Parameter
MS6323
16-Bits Stereo Audio DAC
Rating 6 -2000 to 2000 -65 to 150 -40 to 85 150 260 210 235
Unit V V
/W
OPERATING RATINGS
Symbol VDD Supply Voltage Parameter Min 2.7 Typ Max 5.5 Unit V
3.3V ELECTRICAL CHARACTERISTICS
(Ta=25 Symbol DC Characteristics VCAP VDC VFS IQ PSRR CS Res THD+N S/N Voltage at CAP Output DC level Full scale output voltage Quiescent current Power supply rejection ratio Channel separation Resolution Total harmonic distortion plus noise Signal-to-noise ratio VFS=0.5VDD At code 0000H CAP=1uF, f=100Hz CAP=10uF, f=100Hz 1.60 1.60 1.5 45 63 78 86 1.65 1.65 1.65 2.0 50 68 84 -66 0.05 92 1.70 1.70 1.8 2.3 16 -62 0.08 V V Vpp mA dB dB dB bits dB , VDD=3.3V, VSS=0V, f=1kHz, Cap=1uF; unless otherwise specified) Parameter Conditions Min Typ Max Unit
AC Characteristics
%
dB
REV1
3
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MOSA
2.7V ELECTRICAL CHARACTERISTICS
(Ta=25 Symbol DC Characteristics VCAP VDC VFS IQ PSRR CS Res THD+N S/N Voltage at CAP Output DC level Full scale output voltage Quiescent current Power supply rejection ratio Channel separation Resolution Total harmonic distortion plus noise Signal-to-noise ratio At code 0000H CAP=1uF, f=100Hz CAP=10uF, f=100Hz VFS=0.5VDD 1.30 1.30 1.2 45 63 77 84 , VDD=2.7V, VSS=0V, f=1kHz, Cap=1uF; unless otherwise specified) Parameter Conditions Min
MS6323
16-Bits Stereo Audio DAC
Typ 1.35 1.35 1.35 1.9 49 68 83 -66 0.05 90
Max 1.40 1.40 1.5 2.2 16 -62 0.08 -
Unit V V Vpp mA dB dB dB bits dB
AC Characteristics
%
dB
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25 , f=1kHz, Cap=1uF; unless otherwise specified)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
CHANNEL SEPARATION (dB)
QUIESCENT CURRENT (mA)
THD+N (%)
FREQUENCY (Hz)
Quiescent current vs. supply voltage e
THD+N vs. supply voltage
Channel separation vs. frequency
CAP=22uF
CAP=10uF
CAP=22uF
CAP=10uF
PSRR (dB)
CAP=1uF
PSRR (dB)
CAP=1uF
VDD=3.3V VRR=-20dBV
VDD=2.7V VRR=-20dBV
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR vs. frequency REV1
PSRR vs. frequency
4
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MOSA
TIMING AND DATA FORMAT
MS6323
16-Bits Stereo Audio DAC
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 RIGHT tr tHB tf tLB tHW tSW
WS
BCK
tcr LSB MSB tSD tHD
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 Data format (BCK, WS, DATA) Symbol Parameter VIL VIH Input LOW level Input HIGH level Input Leakage Current LOW Input Leakage Current HIGH Input Clock Frequency Bit Rate Data Input Word Select Input 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
Format of input signals.
Conditions
Min 0.7VDD 54 15 15 12 2 2 12
Typ -
Max 0.3VDD 10 10 18.4 18.4 384 12 12 -
Unit V V
l I IL l l I IH l f BCK
BR
A A
MHz Mbits/s kHz ns ns ns ns ns ns ns ns ns
fWS
tr tf t Cr t HB t LB t SD t HD t HW t SW
REV1
5
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MOSA
APPLICATION INFORMATION
MP3 digital to analog converting solution
MS6323
BCK WS DATA GND VoR 1uF CAP 1uF VoL VDD 1.2nF 1nF 15k 22k 22k 68pF 39k
MS6323
16-Bits Stereo Audio DAC
100uF Headphone (32 )
MS6308
10 Supply 10uF 0.1uF 100k 1uF 100k VREF
f-3dB = 17.5kHz DC gain = 1.05 VDAC out p-p = 1.65V Vout p-p = 1.75V
For VDD = 3.3V
Fig.4
A third order lowpass filter ( Smoothing filter ) for DAC output.
MP3 DECODER
DAC
Headphone Driver
470pF
20k
MS6323
1 SUNPLUS BCK WS DATA GND VoR CAP VoL VDD 8 7 6 5 1uF 50k
1.65VPP
50k
0.1uF VRE
F
20k
2 1 3
47uF
1.65VPP
SPCA751
STMicroelectronics
2 3
STA013
4
10uF 5 0.1uF 20k
MS6308
PHONE JACK 7 6 22k 47uF Headphone (32 )
10
Supply
3.3V AVDD
47uF 0.1uF
450pF
Fig.5
A first order lowpass filter for DAC output.
REV1
6
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MOSA
EXTERNAL DIMENSIONS
MS6323
16-Bits Stereo Audio DAC
8
5
Symbol 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
H
E 1 4
D
A A1 B C D H E e L
L A A1 e B C
SOP8
Symbol A A1 A2 B C D H E e L
H
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 e B L
A1
C
MSOP8
REV1
7
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MOSA
TAPE AND REEL (Unit : mm)
2.0 0.30 0.05 4.0 0.05 1.5+0.1/-0.0 DIA
MS6323
16-Bits Stereo Audio DAC
1.75 0.3R MAX 5.5 0.05 12.0 0.3
5.4
3.0 3.6 6.9
8.0 1.5 MIN 0.5 Radius Typical
2.0 1.7
SOP8
2.0 0.30 0.05 4.0
0.05
1.5+0.1/-0.0
1.75 0.3R MAX 5.5 0.05 12.0 0.3 3.3
5.2 1.5 MIN 4.2 3.4 1.6 1.2
8.0 0.3 Typical
MSOP8
REV1
8
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