MS6610 MOSA ELECTRONICS Stereo Audio DAC FEATURES ‧ ‧ ‧ ‧ ‧ ‧ ‧ ‧ ‧ ‧ Current output ‧ Easy application : Space saving package(SOP8 ) Operation range: 2.7V~5.5V Low power consumption Output and bias current are proportional to supply voltage Low total harmonic distortion Wide dynamic range(16-bit resolution) Fast setting time permits 2*, 4*, and 8* oversampling(serial input) or double speed operation at 4* oversampling Internal bias current ensures maximum dynamic range Wide operating temperature range of -40℃ to 85℃ Internal timing and control circuits Compatible with most of the Japanese input formats; time multiplexed, two's complement, TTL ‧ No zero crossing distortion APPLICATIONS VCD Player, DVD Player. DESCRIPTION The MS6610 is a 16-bit current-output Digital-to-Analog Converter(DAC). The MS6610 is fabricated in a 0.8µm CMOS process and features extremely low power dissipation, small package size and ease of 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 MS6610 ideally suited for use in digital audio equipment. MS6610 is pin and function compatible with the Philips, TDA1545. 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 IOL 6 left channel output VREF 7 reference voltage output IOR 8 right channel output BCK 1 8 IOR WS 2 7 VREF DATA 3 MS6610 GND 4 6 IOL 5 VDD Pin configuration -1- www.mosanalog.com.tw MS6610 MOSA ELECTRONICS Stereo Audio DAC BLOCK DIAGRAM 1nF C1 3.9K I BL 6 I OL + Vref RIGHT OUTPUT LATCH LEFT OUTPUT LATCH R1 - V OUT left OP1 1nF C2 I BR 3.9K 8 I OR LEFT BIT SWITCHES + 11-BIT PASSIVE DIVIDER 32 (5-BIT) MATCHED CURRENT SOURCE 32 (5-BIT) MATCHED CURRENT SOURCES 11-BIT PASSIVE DIVIDER Iref R2 - RIGHT BIT SWITCHES VOUT right OP2 Vref Iref I BL Iref I BR BCK 1 WS 2 DATA 3 7 REFERENCE SOURCE LEFT INPUT LATCH Vref R4 33K R3 22K Rref 11K CONTROL 5 RIGHT INPUT LATCH & + C4 1uF VDD C3 100nF TIMING 4 Fig.1 ground Block diagram. LIMITING VALUES Symbol Parameter VDD 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 MS6610 MOSA ELECTRONICS Stereo Audio DAC ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V) SYM PARAMETER VDD Positive Supply Voltage I DD Operating Current PSSR Power Ripple Rejection Ratio CONDITIONS at code 0000H MIN 2.7 - TYP 5 3 30 MAX 5.5 5 UNIT V mA dB MIN TYP MAX 18.4 18.4 384 12 UNIT MHz Mbits/s kHz ns 12 ns DIGITAL INPUTS (WS, BCK, DATA) SYM f BCK BR FWS tr tf t Cr t HB t LB t SD t HD t HW t SW PARAMETER Input Clock Frequency Bit Rate Data Input (Pin 3) Word Select Input (Pin 2) Rise Time CONDITIONS Fall Time 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 ANALOG INPUT (Iref) SYM Rref PARAMETER Reference Resistor (Fig.1) CONDITIONS MIN 7.4 TYP 11.0 MAX 14.6 UNIT K ANALOG OUTPUT (IOL, IOR) SYM Res VDCC I FS TCFS Ptot I bias THD THD S/N CS PARAMETER CONDITIONS Resolution DC output Voltage Compliance Full Scale Output Current I FS = 0.2VDD Full Scale Temperature Coefficient at Analog Outputs ; I OL, I OR Total Power Dissipation at code 0000H Bias Current (adjustable) Total Harmonic Distortion including noise at 0 dB Total Harmonic Distortion including noise at -60 dB Signal-to-Noise Ratio a-weighted at code 0000H Channel Separation -3- MIN 2.0 0.9 643 TYP 1.0 ±400 15 714 -85 0.005 -30 3 92 95 MAX 16 VDD-1 1.1 785 -78 0.01 -24 6 UNIT bits V mA 16 10mW µA dB ﹪ dB ﹪ dB dB www.mosanalog.com.tw MS6610 MOSA ELECTRONICS Stereo Audio DAC TIMING AND DATA FORMAT The MS6610 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 LOW level on the word select input(WS) input data is placed in the right input register and with HIGH level on the WS input data is placed in the left register. 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 output voltage Vref(Fig. 1) is 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 MSB 2 1 0 15 LSB MSB 14 13 2 1 0 LSB MEASUREMENT BLOCK DIAGRAM R-ch Pattern Generator DAC Generate sinewave pattern for BCK.WS.DATA MS6610 L-ch OPAmp Analysis Equipment MS6308 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 MS6610 MOSA ELECTRONICS Stereo Audio DAC APPLICATION INFORMATION VDD 10uF 0.1uF 1nF 100uF 3.9k VOA 22k 10k BCK 1 5 2 8 8 1 3 WS 2 MS6610 33k VREF 100uF MS6308 7 5 7 DATA 3 6 6 4 1uF 4 100uF 3.9k VOB 1nF 10k Fig.3 Example of application with MS6610 (audio DAC) 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 MS6610 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 MS6610BSTR MS6610BS 2.5k Units Tape and Reel 8-Pin SOP MS6610BSU MS6610BS 100 Units Tube 8-Pin SOP (lead free) MS6610BSGTR MS6610BSG 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6610BSGU MS6610BSG 100 Units Tube -6- www.mosanalog.com.tw