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REV 3 1 www.mosanalog.com 16-Bits Stereo Audio DAC
FEATURES
‧ Operation range: 2.7V~6.5V. ‧ Low power consumption ‧ 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 . ‧ The full scale output voltage can be mask optioned. ‧ Audio Format：Right Justified(TTL Level). ‧ Space saving package SOP8.
APPLICATIONS
‧Multimedia system ‧MP3, PDA, Portable Digital Audio.
DESCRIPTION
The MS6311 is a 16-bit voltage-output Digital-to-Analog Converter(DAC). The MS6311 is fabricated in a 0.8m CMOS process and features extremely low power dissipation, small package size and easy application. The accuracy of the matched coarse current sources, combined with the unique symmetrical decoding method, preclude zero-crossing distortion and ensures high quality audio reproduction. These unique features, comb ined with its exceptional performance, make the MS6311 ideally suited for use in digital audio equipment. MS6311 is pin and function compatible with the Philips, TDA1311. 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 n.c. 7 not connected VOR 8 right channel output MS6311 VOR n.c. VOL VDD BCK WS DATA GND Pin configuration
REV 3 2 www.mosanalog.com BLOCK DIAGRAM LEFT OUTPUT LATCH LEFT BIT SWITCHES 11-BIT PASSIVE DIVIDER 32 (5-BIT) MATCHED CURRENT SOURCES Iref RIGHT OUTPUT LATCH RIGHT BIT SWITCHES 32 (5-BIT) MATCHED CURRENT SOURCE 11-BIT PASSIVE DIVIDER Iref LEFT INPUT LATCH RIGHT INPUT LATCHCONTROL TIMING Vref Vref REFERENCE SOURCE IBL Iref I BR IBL IBR BCK WS DATA VOUT left VOUT right VDD GND OP1 OP2 100nF Rref 11K Vref 33K 22K Fig.1 Block diagram.
ORDERING INFORMATION
Package Part number Packaging Marking Transport Media 8-Pin SOP (lead free) MS6311ASGTR MS6311ASG 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6311ASGU MS6311ASG 100 Units Tube RoHS Compliance
REV 3 3 www.mosanalog.com LIMITING VALUES Symbol Parameter Rating Unit VDD Positive Supply Voltage 6.5 V TSTG Storage Temperature Range -55 to 150 ℃ TA Operating Ambient Temperature Range -40 to 85 ℃ TJ Maximum Junction Temperature 150 ℃ TS Soldering Temperature, 10 seconds 260 ℃ TESD Electrostatic Handling -2000 to 2000 V RTHJA Thermal Resistance from Junction to Ambient in Free Air SOP8 210 ℃/W OPERATING RATINGS Symbol Parameter Min Typ Max Unit VDD Supply Voltage 2.7 - 6.5 V 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V, f=1kHz ; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit Res Resolution - - 16 bits VFS Full Scale Output Voltage VFS=0.4VDD 1.8 2.0 2.2 V TCFS Full Scale Temperature Coefficient at Analog Outputs ; V OL, VOR - 400 - 10-16 VDC Output Bias - 2.5 - V THD Total Harmonic Distortion including noise - -68 -63 dB at 0 dB; note 1 - 0.04 0.07 ﹪ THD Total Harmonic Distortion including noise - -30 -24 dB at -60 dB; note 1 - 3 6 ﹪ CS Channel Separation 75 80 - dB l d I O l Unbalance Between Outputs note 1 - 0.2 0.3 dB l t d l Time Delay Between Outputs - 0.2 - s S/N Signal-to-Noise Ratio a-weighted at code 0000H 86 92 - dB Note : 1.Measured with 1kHz sinewave generated at sampling rate of 192 kHz.
REV 3 4 www.mosanalog.com TIMING AND DATA FORMAT The MS6311 accepts input serial data formats of 16-bit word length. Left and right data words are time multiplexed. The MSB (bit 1) must always be first. The form at 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 latc hed in the output registers which control the bit switches. Internal bias currents I BL and I BR 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). The reference voltage Vref (Fig. 1) is approximately 2/3 VDD. 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 Right justified format Data format (BCK, WS, DATA) Symbol Parameter Conditions Min Typ. Max Unit VIL Input LOW level - - 0.8 V VIH Input HIGH level 2 - - V l I IL l Input Leakage Current LOW V I = 0.8V - - 10 A l I IH l Input Leakage Current HIGH V I = 2.4V - - 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
REV 3 5 www.mosanalog.com
APPLICATION INFORMATION
A typical example of a CD-application with the MS6311 is shown in Fig.4. It features typical decoupling components and a second-order analog post-filter (smoothing filter) stage providing a line output. BCK WS DATA GND VoR N.C VoL VDD MS6311 50k MS2100 50k 420pF 10Ω VDD 47uF 0.1uF 50k MS2100 50k 420pF 100pF 100pF Fig.4 Example of a 2nd order filter application. Note : No external capacitor loading is allowed at the output pins 6 and 8.
REV 3 6 www.mosanalog.com EXTERNAL DIMENSIONS H E D A A1 e B C L 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 e 1.27 BSC 0.050 BSC 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 L 0.40 1.27 0.016 0.050 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