MS6324/26 MOSA 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 . ‧ Cost efficient. ‧ Fast setting time permits 2*, 4*, and 8* oversampling (serial input) or double speed operation at 4* oversampling . ‧ Output voltage swing is proportional to supply voltage (VOPP=VDD/2). ‧ The minimum HIGH voltage of digital clocks (WS,DATA and BCK)and the control inputs can be 1.8V at Vdd = 5V. ‧ As the power is up, the initial registers of the DAC are 0000Hex, so the DAC output will beVdd/2. ‧ Audio Format：I2S(MS6324) Right Justified(MS6326) ‧ Space saving package SOP8, MSOP8, DFN8 APPLICATIONS •Multimedia system •MP3, PDA, Portable Digital Audio. •Set top box. DESCRIPTION The MS6324/26 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. As the power is up, the initial registers of the DAC are 0000Hex, so the DAC output will beVdd/2. These unique features, combined with its exceptional performance, make the MS6324/26 ideally suited for use in portable audio equipment. MS6326 is pin and function compatible with MS6323. 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 VOR 7 8 Cap Right channel output REV 2 SOP8/MSOP8 1/13 DFN8 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC BLOCK DIAGRAM RF IBL 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 LEFT INPUT LATCH BCK IBR 7 REFERENCE SOURCE 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 Package 8-Pin SOP (lead free) Part number MS6324GTR Marking MS6324G Transport Media 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6324GU MS6324G 100 Units Tube 8-Pin MSOP (lead free) MS6324MGTR 6324G 3.5k Units Tape and Reel 8-Pin MSOP (lead free) MS6324MGU 6324G 80 Units Tube 8-Pin DFN (lead free) MS6324DGTR MS6324 5k Units Tape and Reel 8-Pin SOP (lead free) MS6326GTR MS6326G 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6326GU MS6326G 100 Units Tube 8-Pin MSOP (lead free) MS6326MGTR 6326G 3.5k Units Tape and Reel 8-Pin MSOP (lead free) MS6326MGU 6326G 80 Units Tube 8-Pin DFN (lead free) RoHS Compliance MS6326DGTR MS6326 5k Units Tape and Reel REV 2 2/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit 6.5 V -2000 to 2000 V Storage Temperature Range -65 to 150 ℃ TA Operating Ambient Temperature Range -40 to 85 ℃ TJ Maximum Junction Temperature VDD Positive Supply Voltage VESD Electrostatic Handling TSTG TS RTHJA Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air SOP8 MSOP8 DFN8 150 ℃ 260 ℃ 175 235 120 ℃/W OPERATING RATINGS Symbol VDD Parameter Supply Voltage Min Typ Max Unit 2.5 - 6.5 V Min Typ Max Unit 2.95 3 3.05 V 2.95 3 3.05 V 2.8 3 3.2 Vpp 6V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=6V, 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 - 3 - mA IFS Maximum operation current VFS=0.5VDD - 3.2 - mA PSRR Power supply rejection ratio Cap=1uF, f=100Hz 44 49 - dB Cap=10uF, f=100Hz 59 63 - dB CS Channel separation 89 94 - dB AC Characteristics Res Resolution - - 16 bits THD+N Total harmonic distortion plus noise - -68 -63 dB - 0.04 0.068 % S/N Signal-to-noise ratio 89 95 - dB REV 2 3/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC 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 - 2.7 - mA IFS Maximum operation current VFS=0.5VDD - 2.8 - mA PSRR Power supply rejection ratio Cap=1uF, f=100Hz 45 50 - dB Cap=10uF, f=100Hz 64 69 - dB CS Channel separation 88 93 - dB AC Characteristics Res Resolution - - 16 bits THD+N Total harmonic distortion plus noise - -68 -63 dB S/N Signal-to-noise ratio - 0.04 0.068 % 89 95 - dB Min Typ Max Unit 3.3V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=3.3V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions 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 - 2.3 - mA IFS Maximum operation current VFS=0.5VDD - 2.4 - mA PSRR Power supply rejection ratio CS Channel separation Cap=1uF, f=100Hz 45 50 - dB Cap=10uF, f=100Hz 63 68 - dB 85 90 - dB - -66 -62 dB - 0.05 0.08 % 86 92 - dB AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio REV 2 4/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC 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 1.15 1.25 1.35 Vpp IQ Quiescent current At code 0000H - 2.0 - mA IFS Maximum operation current VFS=0.5VDD - 2.05 - mA PSRR Power supply rejection ratio Cap=1uF, f=100Hz 45 49 - dB Cap=10uF, f=100Hz 62 67 - dB CS Channel separation 82 87 - dB - -66 -62 dB - 0.05 0.08 % 83 89 - dB AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio TYPICAL PERFORMANCE CHARACTERISTICS VDD=2.5V REV 2 THD+N (%) THD+N (%) THD+N (%) (Ta=25℃, f=1kHz, Cap=1uF, sampling rate=4fs; unless otherwise specified, ) VDD=3.3V VDD=5V FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) THD+N vs. frequency THD+N vs. frequency THD+N vs. frequency 5/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC PSRR (dB) THD+N (%) THD+N (%) CAP=10uF CAP=1uF VDD=2.5V VRR=-20dBV VDD=6V FREQUENCY (Hz) SUPPLY VOLTAGE (V) FREQUENCY (Hz) THD+N vs. frequency THD+N vs. supply voltage PSRR vs. frequency CAP=10uF CAP=10uF VDD=3.3V VRR=-20dBV CAP=1uF VDD=5V VRR=-20dBV PSRR (dB) CAP=1uF PSRR (dB) PSRR (dB) CAP=10uF CAP=1uF VDD=6V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency QUIESCENT CURRENT (mA) CHANNEL SEPARATION (dB) FREQUENCY (Hz) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Quiescent current vs. supply voltage Channel separation vs. supply voltage REV 2 6/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC TIMING AND DATA FORMAT The MS6324/26 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 DATA tSD LSB Fig.2 Data format (BCK, WS, DATA) Symbol Parameter tHD MSB Timing and input signals. Min Typ. Max Unit Input LOW level - - 0.7 V VIH Input HIGH level 1.8 - - 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 Data Hold Time to Bit Clock 2 - - ns Word Select Hold Time 2 - - ns Word Select Set-up Time 12 - - ns VIL REV 2 Conditions 7/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC I2S format WS LEFT RIGHT BCK 1 BCK DATA 15 1 BCK 14 13 2 MSB 1 0 15 14 LSB MSB 13 2 1 0 LSB Fig.4 I2S format(MS6324) Right justified format LEFT WS RIGHT BCK DATA 2 1 0 15 14 13 2 1 MSB 0 15 LSB MSB 14 13 2 1 0 LSB Fig.3 Right justified format(MS6326) APPLICATION INFORMATION MP3 digital to analog converting solution MS6324/26 BCK VoR WS CAP DATA VoL 39k 68pF 1uF 1uF GND 15k 22k 22k 100uF 1.2nF V DD 1nF Headphone (32Ω) MS6308 10Ω 100k Supply 10uF VREF 0.1uF 100k f-3dB DCgain VDACOUT P-P VOUT P-P = = = = 17.5KHz 1.05 1.65V 1.75V 1uF For VDD = 3.3V Fig.4 A third order lowpass filter ( Smoothing filter ) for DAC output. REV 2 8/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC DAC Headphone Driver 470pF 20k MS6324/26 1 BCK VoR 8 1.65VPP 0.1uF 20k 2 1 2 WS CAP 7 3 DATA VoL 6 4 GND VDD 5 50k 1uF 50k VREF PHONE JACK 5 Supply 10Ω 3.3V 1.65VPP MS6308 10uF 0.1uF 47uF 3 20k 7 47uF Headphone (32Ω) 6 22k AVDD 47uF 450pF 0.1uF Fig.5 A first order lowpass filter for DAC output. REV 2 9/13 www.mosanalog.com MS6324/26 MOSA 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 D D2 D/2 L Symbol E/2 E2 E K e b A A1 A3 D D2 E E2 e b L K JEDEC Min 0.80 0 1.60 1.35 Dimension in mm Nom Max 0.90 1.00 0.02 0.05 0.20 REF. 3.00 BASIC 2.50 3.00 BASIC 1.75 0.65 BASIC 0.30 0.35 0.40 0.50 0.25 0.30 0.20 MO-229(Variation V3030C-2) A A3 A1 DFN8 REV 2 10/13 www.mosanalog.com MS6324/26 MOSA 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 2 11/13 www.mosanalog.com MS6324/26 MOSA 16-Bits Stereo Audio DAC 4.0 0.1 1.5+0.1/-0.0 2.0 0.05 0.30 0.05 1.75 0.01 5.5 0.05 12.0 0.3 3.4 0.1 8.0 0.1 1.2 1.6+0.1/-0.0 3.4 0.1 DFN8(3x3mm) REV 2 12/13 www.mosanalog.com MS6324/26 MOSA 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: MS6324/26 output MS6324/26 output test ports. Circuit R1 51K AVDD 1 2 + C6 10u + + C7 0.1u AVDD + C2 10u R2 51K J2 C3 R3 J1 U1 VoR Cap VoL VDD MS6324/26 0.1u R4 20K 0.1u R5 20K C4 C8 + C1 J4 1u OUTA VDD -INA OUTB +INA -INB Vss +INB J3 C5 47u C9 47u OUTPUT MS6308 R6 + 1 2 C10 Vo REV 2 1 2 HPo 8 7 6 5 + BCK WS DATA GND 1 2 3 4 + 1K 1K 1K + INPUT R7 R8 R9 J5 U3 8 7 6 5 + 1 2 3 4 1 2 3 4 470p 20K 13/13 20K 470p R10 R11 1K 1K www.mosanalog.com