MS6323 ETC

Document overview

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Technical content

REV1 1 www.mosanalog.com.tw 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 8 mW 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 inpu t) or double sp eed operation at 4* oversampling ‧Compatible with m ost of th e Jap anese inp ut form ats; time multiplexed, two's complement, CMOS input level ‧Output vo ltage swing is propo rtional to supply vo ltage (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 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 VDD BCK WS DATA GND Pin 7 : Capacitor = 1µF (ripple rejection)

REV1 2 www.mosanalog.com.tw 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 B lock 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 3 www.mosanalog.com.tw ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit VDD Positive Supply Voltage 6 V VESD Electrostatic Handling -2000 to 2000 V TSTG Storage Temperature Range -65 to 150 Ċ TA Operating Ambient Temperature Range -40 to 85 Ċ TJ Maximum Junction Temperature 150 Ċ TS Soldering Temperature, 10 seconds 260 Ċ RTHJA Thermal Resistance from Junction to Ambient in Free Air SOP8 MSOP8 210 235 Ċ/W OPERATING RATINGS Symbol Parameter Min Typ Max Unit VDD Supply Voltage 2.7 - 5.5 V 3.3V ELECTRICAL CHARACTERISTICS (Ta=25Ċ, VDD=3.3V, VSS=0V, f=1kHz, Cap=1uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit 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 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 Res Resolution - - 16 bits - -66 -62 dB THD+N Total h armonic distortion plus noise - 0.05 0.08 % S/N Signal-to-noise ratio 86 92 - dB

REV1 4 www.mosanalog.com.tw 2.7V ELECTRICAL CHARACTERISTICS (Ta=25Ċ, 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 1.30 1.35 1.40 V VDC Output DC level VFS=0.5VDD 1.30 1.35 1.40 V VFS Full scale output voltage 1.2 1.35 1.5 Vpp IQ Quiescent current At code 0000H - 1.9 2.2 mA CAP=1uF, f=100Hz 45 49 - dB PSRR Power supply rejection ratio CAP=10uF, f=100Hz 63 68 - dB CS Channel separation 77 83 - dB AC Characteristics Res Resolution - - 16 bits - -66 -62 dB THD+N Total h armonic distortion plus noise - 0.05 0.08 % S/N Signal-to-noise ratio 84 90 - dB TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25Ċ, f=1kHz, Cap=1uF; unless otherwise specified) QUIESCENT CURRENT (mA) SUPPLY VOLTAGE (V) THD+N (%) SUPPLY VOLTAGE (V) CHANNEL SEPARATION (dB) FREQUENCY (Hz) Quiescent current vs. supply voltage e THD+N vs. supply voltage Channel separation vs. frequency PSRR (dB) FREQUENCY (Hz) PSRR (dB) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency CAP=22uF CAP=10uFCAP=22uF CAP=10uF CAP=1uF CAP=1uF VDD=3.3V VRR=-20dBV VDD=2.7V VRR=-20dBV

REV1 5 www.mosanalog.com.tw TIMING AND DATA FORMAT The MS6323 accepts input serial data formats of 16-bi t word le ngth. Le ft and right data words are tim e 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 th e right register (Fig. 1). Th e data in th e input reg isters are simultaneously latched in th e output registers which control the bit switches. Internal bias currents IBL and IBR are each adde d 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. 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. Data format (BCK, WS, DATA) Symbol Parameter Conditions Min Typ Max Unit VIL Input LOW level - - 0.3VDD V VIH Input HIGH level 0.7VDD - - V l I IL l Input Leakage Current LOW - - 10 µA l I IH l Input Leakage Current HIGH - - 10 µA 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

REV1 6 www.mosanalog.com.tw

APPLICATION INFORMATION

MP3 digital to analog converting solution BCK WS DATA GND VoR CAP VoL VDD MS6323 100uF MS6308 68pF 39k 22k22k 1nF 15k 1.2nF 1uF 100k 1uF 100k10Ƹ 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 (32Ƹ) Fig.4 A third order lowpass filter ( Smoothing filter ) for DAC output. 0.1uF BCK WS DATA GND VoR CAP VoL VDD MS6323 8 47uF MS6308 DAC Headphone Driver 22k 450pF 50k 50k 10uF VRE F 20k 20k 20k 470pF 0.1uF 7 47uF 1uF MP3 DECODER 1.65VPP 1.65VPP Headphone (32Ƹ) PHONE JACK SUNPLUS SPCA751 STMicroelectronics STA013 AVDD 10Ƹ Supply 47uF 0.1uF 3.3V Fig.5 A first order lowpass filter for DAC output.

REV1 7 www.mosanalog.com.tw 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

REV1 8 www.mosanalog.com.tw 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