MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER DESCRIPTION PIN CONFIGURATION (TOP VIEW) The M62356P is an integrated circuit semiconductor of C-MOS structure with 8 channels of built-in D-A converters. The input data is a easy-to-use 3-wires serial data transfer method and it is able to cascading serial use with Do terminal. 1 18 R CLK 2 17 VDD DI 3 16 DO Ao5 4 15 Ao4 Ao6 5 14 Ao3 Ao7 6 13 Ao2 Ao8 7 12 Ao1 GND 8 11 VrefU1 VrefL 9 10 VrefU2 FEATURES •Digital data transfer format 3-wires serial data transfer method •Output voltage range 0V to 12V •Short setting time •D-A converter high level reference voltage is possess two input terminal then two reference voltage is possible to input. Digital voltage supply........................VDD=5V±10% LD APPLICATION Outline 18P4 Conversion from digital control data to analog control data for home-use and industrial equipment. Automatic adjustment by combination with EEPROM and microcomputer(replacement of conventional half-fixed resistor). Signal gain control of DISPLAY-MONITOR or CTV. BLOCK DIAGRAM R VDD Do Ao4 Ao3 Ao2 Ao1 18 17 16 15 14 13 12 VrefU1 11 VrefU2 10 D-A D-A D-A D-A CONVERTER CONVERTER CONVERTER CONVERTER 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH 8-BIT LATCH D-A D-A D-A D-A CONVERTER CONVERTER CONVERTER CONVERTER 1 2 3 4 5 6 7 8 LD CLK DI Ao5 Ao6 Ao7 Ao8 GND MITSUBISHI ELECTRIC 9 VrefL ( 1 / 6 ) MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER EXPLANATION OF TERMINALS Pin No. 3 16 2 1 17 11 8 10 9 18 12 13 14 15 4 5 6 7 Symbol DI DO CLK LD VDD VrefU1 GND VrefU2 VrefL R Ao1 Ao2 Ao3 Ao4 Ao5 Ao6 Ao7 Ao8 Function Serial data input terminal Serial data output terminal Serial clock input terminal LD terminal input high level than latch circuit data load Digital power supply terminal D-A converter upper reference voltage input terminal(CH1~CH4) GND D-A converter upper reference voltage input terminal(CH5~CH8) D-A converter lower reference voltage input terminal Reset terminal 8-bit D-A converter output terminal ABSOLUTE MAXIMUM RATINGS(Ta=25°C, unless otherwise noted) Symbol VDD VrefU Parameter Supply voltage D-A converter upper reference voltage VIN IDO IAO Topr Tstg Input voltage Output current D-A converter output current Operating temperature Storage temperature Conditions Ratings -0.3~7.0 12.5 -0.3~Vcc+0.3 -5~+5 10 -20~+75 Unit V -40~+125 °C V V mA µA °C RECOMMENDED OPERATING CONDITIONS •Digital voltage supply VDD 5V±10% ELECTRICAL CHARACTERISTICS Digital part(Ta=25°C,VDD=5V, unless otherwise noted) Symbol VDD Test conditions Parameter Supply voltage Min. 4.5 IDD Circuit current VIL VIH VOL Input low voltage Input high voltage Output low voltage CLK=1MHz operation IOL=1.0mA VOH Output high voltage IOH=-400µA Limits Typ. Max. 5.5 V 1 mA 0.2VDD V 0.4 V V 0.8VDD MITSUBISHI ELECTRIC VDD-0.4 Unit V ( 2 / 6 ) MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER Analog part(VDD=+5V,VrefU=12V,VrefL=0V,Ta=-20°C~+85°C, unless otherwise noted) Symbol Test conditions Parameter IrefU D-A converter upper reference input current max VrefU D-A converter upper reference voltage range VrefL D-A converter lower reference voltage range VAO D-A converter output voltage range DNL Differential nonlinearity NL Nonrineality Min. Limits Typ. Max. 1.2 2.5 mA 12 V 1.5 V All ch‘s set up at 107/256 3.5 VrefL +2.5LSB Guaranteed monotonic Unit VrefU -1.5LSB ±1.0 LSB ±1.5 LSB V TIMING CHART (MODEL) R LSB MSB DI D11 D10 D0 D9 CLK LD AO Input data is carried out LD signal Low besides CLK signal positive edge. CLK,LD is keep generally High level. MITSUBISHI ELECTRIC ( 3 / 6 ) MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER AC CHARACTERISTICS(Ta=25°C,VDD=+5V,VrefU=12V,VrefL=0V, unless otherwise noted) Parameter Symbol Test conditions Min 200 200 Clock "L"pulse width tCKL tCKH tCR tCF tDCH tCHD tCHL Clock "H"pulse width Clock rise time Clock fall time Data set up time Data hold time Max 200 200 60 100 200 LD set up time LD hold time tLDC tLDH tDO tLDD Limits Typ CL≤100pF Without load 70 ns ns ns ns ns ns ns 350 ns ns ns 20 µs 100 100 LD "H" pulse width Data output delay time Data output setting time Unit TIMING CHART tCKH tCR tCF CLK tCKL DI tDCH tLDC tCHD tLDH tCHL LD tLDD D-A OUTPUT tDO DO OUTPUT MITSUBISHI ELECTRIC ( 4 / 6 ) MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER DIGITAL FORMAT 1.12-bit shift register 2.Decoder(DAC select data) To set DAC,12-bit data is input in series at CLK signal“positive“ edges while the LD pin status is “Low“. •12 bit serial data (LSB) DATA One DAC circuit is selected from among 8 circuits according to the DAC select data(4-bits:D8,D9,D11 and D14). •DAC select data D8 D9 D10 0 0 0 0 DAC selection Don‘t care 0 0 0 1 Ao1 selection 0 0 1 0 Ao2 selection 1 0 1 Ao3 selection 0 0 1 0 Ao4 selection Ao5 selection CK 0 0 •Data assignment 0 1 0 1 Ao6 selection Ao7 selection 0 Ao8 selection 0 0 1 Don‘t care 0 1 0 Don‘t care 0 1 1 Don‘t care 1 1 1 0 0 Don‘t care 1 0 1 Don‘t care 1 1 1 0 Don‘t care 1 1 1 Don‘t care 0 0 DAC select data 1 1 DAC set up data (LSB) 1 1 (MSB) 0 1 1 D11 1 •DAC set up data (LSB) 1 1 1 0 (MSB) Output voltage D0 0 D1 0 D2 D3 D4 D5 D6 D7 0 0 0 0 0 0 1 0 0 0 0 0 0 0 2/256•(VrefU-VrefL)+VrefL 0 1 0 0 0 0 0 0 3/256•(VrefU-VrefL)+VrefL 1 1 0 0 0 0 0 0 4/256•(VrefU-VrefL)+VrefL 0 1 1 1 1 1 1 1 255/256•(VrefU-VrefL)+VrefL 1 1 1 1 1 1 1 1 256/256•(VrefU-VrefL)+VrefL 0 Ao= 1 2 6 1/256•(VrefU-VrefL)+VrefL 7 2 X D0 + 2 X D1 + 2 X D2 +••••••••+ 2 X D6 + 2 X D7 + 1 • (VrefU - VrefL) + VrefL 256 MITSUBISHI ELECTRIC ( 5 / 6 ) MITSUBISHI<Dig.Ana.INTERFACE> M62356P 8-BIT 8CH D-A CONVERTER APPLICATION CIRCUIT 5V 10µF 17 VDD 11 5V VrefU1 Ao1 12 10µF Ao2 13 OUTPUT VOLTAGE RANGE (0 to 5V) 10 VrefU2 12V Ao3 14 10µF MICRO COMPUTER 1 LD 2 CLK 3 D1 Ao4 15 Ao5 4 Ao6 3 OUTPUT VOLTAGE RANGE (0 to 12V) GND VrefL 8 9 *This IC has relatively high output impedance.To reduce the influence of noise when an output line is long,connect capacitance of a few hundred picofarads to a few thousand picofarads between the output and GND. This application circuit is connected to two reference voltages. Ao7 2 Ao8 1 To use this IC with a single reference voltage,short-circuit pins 10 , 11 ; the outputs from pins Ao1 ~ Ao8 will be controlled at an even level. To prevent interference by noise;be sure to connect capacitance of 10µF to the power supply pin and VrefU pin. MITSUBISHI ELECTRIC ( 6 / 6 )