MS6311 MOSA ELECTRONICS Stereo Audio DAC FEATURES ‧ Voltage Output ‧Easy application : ‧ ‧ ‧ ‧ ‧ ‧ Space saving package (SOP8) Low power consumption Low total harmonic distortion Wide dynamic range(16-bit resolution) No zero crossing distortion Wide operating temperature range(-40℃ to 85℃) ‧ ‧ ‧ ‧ ‧ Internal bias current ensures maximum dynamic range 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, TTL The full scale output voltage can be mask optioned Cost efficient single 2.7 to 5.5 rail power supply output and bias current are proportional to supply voltage integrated current-to-voltage converter APPLICATIONS VCD Player, DVD Player, CD-ROM, DVD-ROM, CD-RW, DVD-RW, Motherboard. DESCRIPTION The MS6311 is a 16-bit voltage-output Digital-to-Analog Converter(DAC). The MS6311 is fabricated in a 0.8µm 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, combined 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. PINNING 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 BCK 1 8 VOR WS 2 7 n.c. DATA 3 MS6311 6 VOL 5 VDD GND 4 Pin configuration -1- www.mosanalog.com.tw MS6311 MOSA ELECTRONICS Stereo Audio DAC BLOCK DIAGRAM R1 2K I BL - 6 + R2 2K I BR LEFT BIT SWITCHES - RIGHT BIT SWITCHES + 11-BIT PASSIVE DIVIDER 32 (5-BIT) MATCHED CURRENT SOURCE 32 (5-BIT) MATCHED CURRENT SOURCES 11-BIT PASSIVE DIVIDER Iref OP1 Vref RIGHT OUTPUT LATCH LEFT OUTPUT LATCH VOUT left 8 VOUT right OP2 Vref Iref I BL Iref I BR Vref R4 ≅ 33K REFERENCE SOURCE LEFT INPUT LATCH BCK 1 WS 2 Rref 11K R3 ≅ 22K 5 DATA 3 RIGHT INPUT LATCH CONTROL & VDD 100nF TIMING 4 Fig.1 GND Block diagram. LIMITING VALUES Symbol VDD Parameter Positive Supply Voltage Tsig Storage Temperature Range TXTAL Maximum Crystal Temperature TAMB Operating Ambient Temperature Range Ves Electrostatic Handling Min Max Unit - 6 -55 +150 V ℃ - +150 ℃ -40 +85 ℃ -2000 2000 V -2- www.mosanalog.com.tw MS6311 MOSA ELECTRONICS Stereo Audio DAC ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V) Symbol Parameter VDD Positive Supply Voltage I DD Operating Current Conditions Min Typ Max Unit 2.7 5 5.5 V - 3.4 6.0 mA Min Typ Max Unit VI = 0.8V - - 10 VI = 2.4V - - 10 µA µA - - 18.4 MHz at code 0000H DIGITAL INPUTS (WS, BCK, DATA) Symbol Parameter l I IL l Input Leakage Current LOW l I IH l Input Leakage Current HIGH f BCK Input Clock Frequency Conditions BR Bit Rate Data Input (Pin 3) - - 18.4 Mbits/s fWS Word Select Input (Pin 2) - - 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 Min Typ Max Unit - - 16 bits 1.8 2.0 2.2 V ANALOG OUTPUTS (VOL,VOR) Symbol Parameter Conditions Res Resolution VFS Full Scale Output Voltage TCFS Full Scale Temperature Coefficient at Analog Outputs ; VOL, VOR - ±400 - 10- VDC Output Bias - 2.5 - V THD Total Harmonic Distortion including noise - -68 -63 at 0 dB; note 1 - 0.04 0.07 dB ﹪ including noise - -30 -24 at -60 dB; note 1 - 3 6 dB ﹪ 75 80 - dB - 0.2 0.3 dB - ±0.2 - µs 86 92 - dB THD CS Total Harmonic Distortion Channel Separation l d I O l Unbalance Between Outputs l t d l Time Delay Between Outputs S/N VFS=0.4VDD Signal-to-Noise Ratio note 1 a-weighted at code 0000H 16 Note : 1.Measured with 1kHz sinewave generated at sampling rate of 192 kHz. -3- www.mosanalog.com.tw MS6311 MOSA ELECTRONICS Stereo Audio DAC 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 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). 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. 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 2 1 MSB Fig.3 0 15 LSB MSB 14 13 2 1 0 LSB Format of input signals. MEASUREMENT BLOCK DIAGRAM R-ch Pattern Generator DAC Generate sinewave pattern for BCK.WS.DATA MS6311 L-ch OPAmp Analysis Equipment f = 1 kHz 2Vp-p sinewave AC Level(Vrms) THD THD+N NOTE : THD and THD+N is measured by HP AUDIO ANALYZER and FFT Analysis. -4- www.mosanalog.com.tw MS6311 MOSA ELECTRONICS Stereo Audio DAC APPLICATION INFORMATION Basic application example 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. 420pF 1 2 BCK VoR WS n.c. 50k 8 MS6308 7 3 DATA VoL 6 4 GND VDD 5 Headphone (32Ω) 50k 100nF 420pF MS6311 50k Headphone (32Ω) 50k 10Ω MS6308 VDD 100nF 47uF Fig.4 Note : 100nF Example of a 2nd order filter application. No external capacitor loading is allowed at the output pins 6 and 8. EXTERNAL DIMENSIONS 4.8 8 5 Unit : mm Tolerance : 0.1mm 6.0 3.9 1 4 1.27 0.42 0.68 1.4 0.22 1.27 0.42 -5- 0.23 www.mosanalog.com.tw MS6311 MOSA ELECTRONICS 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 ORDERING INFORMATION Package Part number Packaging Marking Transport Media 8-Pin SOP MS6311ASTR MS6311AS 2.5k Units Tape and Reel 8-Pin SOP MS6311ASU MS6311AS 100 Units Tube 8-Pin SOP (lead free) MS6311ASGTR MS6311ASG 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6311ASGU MS6311ASG 100 Units Tube -6- www.mosanalog.com.tw