MS6323 MOSA | Alldatasheet
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Technical content
R E V 7 1/11 www.mosanalog.com 16-Bits Stereo Audio DAC Low Power Consumption Low Voltage, Excellent PSRR
FEATURES
‧Operation range: 2.5V~6.5V ‧Excellent Power Supply Rejection Ratio(PSRR) ‧Low operating current ‧Low power consumption 8mW at V DD=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 and TTL input level, MS6323AS for CMOS level, MS6323T for TTL level ‧Output voltage swing is proportional to supply voltage OPP=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 zero- crossing 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 VOR 8 Right channel output MS6323 VOR Cap VOL V BCK WS DATA GND DD Pin 7 : Capacitor = 1F (ripple rejection)
R E V 7 2/11 www.mosanalog.com BLOCK DIAGRAM LEFT OUTPUT LATCH RIGHT OUTPUT LATCH LEFT BIT SWITCHS RIGHT BIT SWITCHS 16-BIT WEIGHT CURRENT DIVIDER 16-BIT WEIGHT CURRENT DIVIDER LEFT INPUT LATCH RIGHT INPUT LATCH CONTROL TIMING BCK WS DATA REFERENCE SOURCE
5 VDD
8 VOUT
0.1uF 1uF CAP REFERENCE CURRENT SOURCE IREF IBR REFERENCE CURRENT SOURCE IREF IBL Fig.1 Block diagram.
ORDERING INFORMATION
Package Part number Marking Transport Media 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 (lead free) MS6323ASMGTR 6323G 3.5k Units Tape and Reel 8-Pin MSOP (lead free) MS6323ASMGU 6323G 80 Units Tube TTL input level Package Part number Marking Transport Media 8-Pin SOP (lead free) MS6323TGTR MS6323TG 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6323TGU MS6323TG 100 Units Tube 8-Pin MSOP (lead free) MS6323TMGTR 6323TG 3.5k Units Tape and Reel 8-Pin MSOP (lead free) MS6323TMGU 6323TG 80 Units Tube RoHS Compliance
R E V 7 3/11 www.mosanalog.com ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit VDD Positive Supply Voltage 6.5 V VESD Electrostatic Handling -2000 to 2000 V TSTG Storage Temperature Range -65 to 150 ℃ TA Operating Ambient Temperature Range -40 to 85 ℃ TJ 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 Parameter Min Typ Max Unit VDD Supply Voltage 2.5 - 6.5 V 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics VCAP Voltage at Cap 2.45 2.5 2.55 V VDC Output DC level 2.45 2.5 2.55 V VFS Full scale output voltage VFS=0.5VDD 2.3 2.5 2.7 Vpp IQ Quiescent current At code 0000H - 2.6 - mA IFS Maximum operation current VFS=0.5VDD - 3.8 - mA Cap=1uF, f=100Hz 44 49 - dB PSRR Power supply rejection ratio Cap=10uF, f=100Hz 60 65 - dB CS Channel separation 81 87 - dB AC Characteristics Res Resolution - - 16 bits - -68 -64 dB THD+N Total harmonic distortion plus noise - 0.04 0.063 S/N Signal-to-noise ratio 89 95 - dB
R E V 7 4/11 www.mosanalog.com 3.3V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=3.3V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics VCAP Voltage at CAP 1.6 1.65 1.7 V VDC Output DC level 1.6 1.65 1.7 V VFS Full scale output voltage VFS=0.5VDD 1.5 1.65 1.8 Vpp IQ Quiescent current At code 0000H - 2.2 - mA IFS Maximum operation current VFS=0.5VDD - 2.3 - mA Cap=1uF, f=100Hz 45 50 - dB PSRR Power supply rejection ratio Cap=10uF, f=100Hz 63 68 - dB CS Channel separation 78 84 - dB AC Characteristics - -66 -62 dB THD+N Total harmonic distortion plus noise - 0.05 0.08 S/N Signal-to-noise ratio 86 92 - dB 2.5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=2.5V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics VCAP Voltage at CAP 1.2 1.25 1.3 V VDC Output DC level 1.2 1.25 1.3 V VFS Full scale output voltage VFS=0.5VDD 1.2 1.25 1.5 Vpp IQ Quiescent current At code 0000H - 2.0 - mA IFS Maximum operation current VFS=0.5VDD - 2.1 - mA Cap=1uF, f=100Hz 44 49 - dB PSRR Power supply rejection ratio Cap=10uF, f=100Hz 59 64 - dB CS Channel separation 77 83 - dB AC Characteristics - -66 -62 dB THD+N Total harmonic distortion plus noise - 0.05 0.08 S/N Signal-to-noise ratio 83 89 - dB
R E V 7 5/11 www.mosanalog.com TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, f=1kHz, Cap=1uF, sampling rate=4fs; unless otherwise specified, ) THD+N (%) FREQUENCY (Hz) THD+N (%) FREQUENCY (Hz) THD+N (%) SUPPLY VOLTAGE (V) THD+N vs. frequency THD+N vs. frequency THD+N vs. supply voltage VDD=2.7V VDD=3.3V VDD=5V PSRR (dB) FREQUENCY (Hz) PSRR (dB) FREQUENCY (Hz) PSRR (dB) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency CAP=22uF CAP=10uFCAP=22uF CAP=10uF CAP=10uF CAP=1uF CAP=1uF CAP=1uF VDD=3.3V VRR=-20dBV VDD=2.7V VRR=-20dBV VDD=2.5V VRR=-20dBV PSRR (dB) FREQUENCY (Hz) QUIESCENT CURRENT (mA) SUPPLY VOLTAGE (V) CHANNEL SEPARATION (dB) SUPPLY VOLTAGE (V) PSRR vs. frequency Quiescent current vs. supply voltage Channel separation vs. supply voltage CAP=10uF CAP=1uF VDD=5V VRR=-20dBV
R E V 7 6/11 www.mosanalog.com TIMING AND DATA FORMAT The MS6323 accepts input serial data formats of 16-bit word length. Le ft 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 LO W level on the WS input, data is placed in the right register (Fig. 1). The data in the input regist ers 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 I FS 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. RIGHTWS BCK DATA LSB MSB tr tHB tf tcr tLB tHW tSW LEFT tSD tHD Fig.2 Timing and input signals. 012 15 14 13 210 MSB LSB 15 14 13 210 MSB LSB RIGHT LEFTWS BCK DATA Fig.3 Format of input signals.
R E V 7 7/11 www.mosanalog.com Data format (BCK, WS, DATA) Symbol Parameter Conditions Min Typ Max Unit Input LOW CMOS level MS6323AS - - 0.3VDD V VIL Input LOW TTL level MS6323T - - 0.8 V Input HIGH COMS level MS6323AS 0.7VDD - - V VIH Input HIGH TTL level MS6323T 2 - - V l I IL l Input Leakage Current LOW - - 10 A l I IH l Input Leakage Current HIGH - - 10 A f BCK Input Clock Frequency - - 18.4 MHz BR Bit Rate Data Input - - 18.4 Mbits/s fWS Word Select Input - - 384 kHz t r Rise Time - - 12 ns t f Fall Time - - 12 ns t Cr 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
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APPLICATION INFORMATION
MP3 digital to analog converting solution BCK WS DATA GND VoR CAP VoL V DD MS6323 100uF MS6308 68pF 39k 22k22k 1nF 15k 1.2nF 1uF 100k 1uF 100k10Ω Supply VREF 10uF 0.1uF 1uF f-3dB = 17.5kHz DC gain = 1.05 VDAC out p-p = 1.65V Vout p-p = 1.75V For VDD = 3.3V Headphone (32Ω) Fig.4 A third order lowpass filter ( Smoothing filter ) for DAC output. 0.1uF BCK WS DATA GND VoR CAP VoL VDD MS6323 47uF MS6308 DAC Headphone Driver 22k 450pF 50k 50k 10uF VRE F 20k 20k 20k 470pF 0.1uF 7 47uF 1uF 1.65VPP 1.65VPP Headphone (32Ω) PHONE JACK AVDD 10Ω Supply 47uF 0.1uF 3.3V Fig.5 A first order lowpass filter for DAC output.
R E V 7 9/11 www.mosanalog.com EXTERNAL DIMENSIONS H E D A A1 e B C L SOP8 A A1 B CL D H E e Dimension in mm Dimension in inch Symbol Min Max Min Max A 1.35 1.75 0.0532 0.0688 A1 0.10 0.25 0.0040 0.0098 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.0075 0.0098 D 4.80 5.00 0.1890 0.1968 H 5.80 6.20 0.2284 0.2440 E 3.80 4.00 0.1497 0.1574 e 1.27 BSC 0.050 BSC L 0.40 1.27 0.016 0.050 Dimension in mm Dimension in inch Symbol Min Max Min Max A 0.81 1.12 0.032 0.048 A1 0.05 0.15 0.002 0.006 A2 0.76 0.86 0.030 0.038 B 0.28 0.38 0.011 0.015 C 0.13 0.23 0.005 0.009 D 2.90 3.10 0.114 0.122 H 4.70 5.10 0.185 0.201 E 2.90 3.10 0.114 0.122 e 0.65 0.026 L 0.40 0.66 0.016 0.026 MSOP8
R E V 7 10/11 www.mosanalog.com 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 1.72.0 0.05 0.05 0.05 0.3 SOP8 3.4 4.2 12.0 5.2 8.0 5.5 1.75 3.3 2.0 4.0 1.5+0.1/-0.0 0.3 Typical1.5 MIN 0.30 0.3R MAX 1.21.6 0.05 0.05 0.05 0.3 MSOP8
R E V 7 11/11 www.mosanalog.com Demo board 4 2 Function description Label 1: Supply Input Supply voltage range is 2.5V to 6.5V. Label 2: Headphone Jack Used 3.5mm diameter of headphone with 32ohm. Label 3: Digital Signal Input Connected to digital audio format. Label 4: MS6323 output MS6323 output test ports. Circuit R1 50K AVDD + C1 + C7 0.1u AVDD OUTPUT + C6 10u BCK1 WS2 DATA3 GND4 VDD 5VoL 6Cap 7VoR 8 MS6313/23 BCK1 WS2 DATA3 GND4 VDD 5VoL 6Cap 7VoR 8 MS6313/23 INPUT OUTA1 -INA2 +INA3 Vss4 +INB 5-INB 6OUTB 7VDD 8 MS6308 C4 0.1u C8 0.1u C3 470p C10 470p R4 20K R5 20K 50K R6 20K R3 20K + C2 10u C5 47u+ C9 47u Vo R7 1K R9 1K R8 1K R10 R11