MOSA MS6323 16-Bits Stereo Audio DAC 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 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 and TTL input level, MS6323AS for CMOS level, MS6323T for TTL 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 = 1F (ripple rejection) REV 7 1/11 www.mosanalog.com 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 RIGHT BIT SWITCHS 8 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 2 3 GND RIGHT INPUT LATCH CONTROL & TIMING 10uF 5 Fig.1 0.1uF VDD Block diagram. ORDERING INFORMATION CMOS input level 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) RoHS Compliance MS6323TMGU 6323TG 80 Units Tube REV 7 2/11 www.mosanalog.com 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 6.5 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 2.5 - 6.5 V Min Typ Max Unit 2.45 2.5 2.55 V 2.45 2.5 2.55 V 2.3 2.5 2.7 Vpp 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions DC Characteristics VCAP Voltage at Cap VDC Output DC level VFS Full scale output voltage VFS=0.5VDD IQ Quiescent current At code 0000H - 2.6 - mA IFS Maximum operation current VFS=0.5VDD - 3.8 - mA PSRR Power supply rejection ratio Cap=1uF, f=100Hz 44 49 - dB Cap=10uF, f=100Hz 60 65 - dB CS Channel separation 81 87 - dB AC Characteristics Res Resolution - - 16 bits THD+N Total harmonic distortion plus noise - -68 -64 dB - 0.04 0.063 S/N Signal-to-noise ratio 89 95 - dB REV 7 3/11 www.mosanalog.com MOSA MS6323 16-Bits Stereo Audio DAC 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 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 - -66 -62 dB - 0.05 0.08 86 92 - dB Min Typ Max Unit AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio 2.5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=2.5V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions 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 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 PSRR Power supply rejection ratio Cap=1uF, f=100Hz 44 49 - dB Cap=10uF, f=100Hz 59 64 - dB CS Channel separation 77 83 - dB - -66 -62 dB - 0.05 0.08 83 89 - dB VFS=0.5VDD AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio REV 7 4/11 www.mosanalog.com MOSA MS6323 16-Bits Stereo Audio DAC TYPICAL PERFORMANCE CHARACTERISTICS VDD=3.3V THD+N (%) THD+N (%) VDD=2.7V THD+N (%) (Ta=25℃, f=1kHz, Cap=1uF, sampling rate=4fs; unless otherwise specified, ) VDD=5V FREQUENCY (Hz) FREQUENCY (Hz) SUPPLY VOLTAGE (V) THD+N vs. frequency THD+N vs. frequency THD+N vs. supply voltage CAP=22uF CAP=22uF CAP=10uF CAP=10uF VDD=3.3V VRR=-20dBV VDD=2.7V VRR=-20dBV CAP=1uF VDD=2.5V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency VDD=5V VRR=-20dBV QUIESCENT CURRENT (mA) PSRR (dB) CAP=1uF CHANNEL SEPARATION (dB) FREQUENCY (Hz) PSRR vs. frequency CAP=10uF REV 7 CAP=1uF PSRR (dB) CAP=1uF PSRR (dB) PSRR (dB) CAP=10uF FREQUENCY (Hz) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) PSRR vs. frequency Quiescent current vs. supply voltage Channel separation vs. supply voltage 5/11 www.mosanalog.com 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 MSB Fig.3 REV 7 2 1 0 15 LSB MSB 14 13 2 1 0 LSB Format of input signals. 6/11 www.mosanalog.com MOSA Data format (BCK, WS, DATA) Symbol Parameter VIL VIH Input LOW CMOS level MS6323 16-Bits Stereo Audio DAC Conditions MS6323AS Input LOW TTL level MS6323T Input HIGH COMS level MS6323AS Input HIGH TTL level MS6323T Min Typ Max Unit - - 0.3VDD V - - 0.8 V 0.7VDD - - V 2 - - V Input Leakage Current LOW - - 10 A A l I IL l l I IH l f BCK Input Leakage Current HIGH - - 10 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 Data Hold Time to Bit Clock 2 - - ns Word Select Hold Time 2 - - ns Word Select Set-up Time 12 - - ns REV 7 7/11 www.mosanalog.com 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. DAC Headphone Driver 470pF 20k MS6323 1 BCK VoR 8 WS CAP 7 3 DATA VoL 6 VDD GND 0.1uF 20k 2 1 2 4 1.65VPP 5 50k 1uF MS6308 10uF PHONE JACK 5 10Ω 3.3V 20k 7 47uF Headphone (32Ω) 6 22k AVDD 47uF 450pF 0.1uF Fig.5 REV 7 1.65VPP F 50k 0.1uF Supply 47uF 3 VRE A first order lowpass filter for DAC output. 8/11 www.mosanalog.com 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 REV 7 9/11 www.mosanalog.com 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 REV 7 10/11 www.mosanalog.com MOSA MS6323 16-Bits Stereo Audio DAC Demo board 4 2 3 1 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 + C6 10u C3 R3 J1 U1 1K 1K 1K INPUT BCK VoR WS Cap DATA VoL GND VDD U3 8 7 6 5 + 1 2 3 4 C4 C8 MS6313/23 BCK VoR WS Cap DATA VoL GND VDD R4 20K 0.1u R5 20K 1 2 8 7 6 5 1 2 3 4 OUTA VDD -INA OUTB +INA -INB Vss +INB 8 7 6 5 C5 J3 47u C9 47u OUTPUT MS6308 J4 U2 1 2 3 4 0.1u R6 20K + R7 R8 R9 + 1 2 3 4 470p 20K + 0.1u + + C7 AVDD + 1 2 + C2 10u R2 50K J2 C10 Vo 470p R10 R11 1K 1K MS6313/23 + C1 1u REV 7 11/11 www.mosanalog.com