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| MITSUBISHI M62342P,FP 8-BIT 2CH D-A CONVERTER WITH BUFFER AMPLIFIERS GENERAL DESCRIPTION The M62342P,FP is a CMOS 2 channel D-A converter with output buffer amplifiers. It can communicate with a microcontroller via few wiring thanks to the adoption of the three-line DI,CLK,LD. The output buffer amplifier employs AB class output with sinking and sourcing capability of more than 1.0mA , and an output voltage range is nearly between ground and Vcc. PIN CONFIGURATION (TOP VIEW) Ao1 1 8 LD M62342 Ao2 2 N.C. 3 7 CLK 6 DI 5 GND VCC 4 Outline 8P4 (P) 8P2S-A (FP) FEATURES * 10bit serial data input (3-wire serial transfer method) * Wide output voltage range Nearly between ground and Vcc(0 to 5V) * High output current drive capability over 1.0mA APPLICATION Conversion from digital data to analog control data for both consumer and industrial equipment. Gain control and automatic adjustment of DISPLAY-MONITOR or CTV. BLOCK DIAGRAM VCC LD CLK DI GND 4 8 7 6 5 10-BIT SHIFT REGISTER ADDRESS DECODER 8 8bit Latch 8bit upper segment R-2R 8bit Latch 8bit upper segment R-2R 1 Ao1 2 Ao2 3 N.C. MITSUBISHI ELECTRIC 2000-8-31.revB ( 1 / 5 ) MITSUBISHI M62342P,FP 8-BIT 2CH D-A CONVERTER WITH BUFFER AMPLIFIERS EXPLANATION OF TERMINALS PIN No. 6 7 8 1 2 4 5 Symbol DI CLK LD Ao1 Ao2 Vcc GND Serial data input terminal Function Shift clock input terminal. Input signal at DI pin is input to 10-bit shift register at rise of shift clock pulse. When H-level signal is input to this terminal,the value stored in 10-bit shift register is loaded in decoder and D-A converter output register. 8bit D-A converter output terminal Power supply terminal GND ABSOLUTE MAXIMUM RATING Symbol Vcc Vin Vo Pd Topr Tstg Parameter Supply voltage Input voltage Output voltage Power dissipation Operating temperature Storage temperature Conditions Ratings Unit -0.3 to 7.0 -0.3 to VCC+0.3 -0.3 to VCC+0.3 417 (DIP) / 272 (FP) -20 to +85 -55 to +125 V V V mW C C ELECTRICAL CHARACTERISTICS (VCC=+5V10%,GND=0V,Ta=-20 to 85C unless otherwise noted) Symbol VCC ICC IILK VIL VIH VAO Parameter Supply voltage Supply current Input leak current Input low voltage Input high voltage Buffer amplifier output voltage range Buffer amplifier output drive range Differential nonlinearity Nonlinearity VCC=5.12V (20mV/LSB) without load (IAO=0) IAO=100A IAO=500A Upper side saturation voltage=0.3V Lower side saturation voltage=0.2V CLK=1MHz, IAO=0A DACdata:6Ah(at maximum current) Test conditions Ratings Min 2.7 0 0 -10 Typ 5.0 0.7 0.5 Max 5.5 2.5 1.6 10 0.2VCC 0.5VCC 0.1 0.2 -1.0 -1.0 -1.5 -2.0 -2.0 VCC-0.1 VCC-0.2 1.0 1.0 1.5 2.0 2.0 0.1 5.0 Unit V mA mA A V V V V mA LSB LSB LSB LSB F DI=CLK=LD=GND,IAO=0A VIN=0 to VCC IAO SDL SL SZERO Zero code error SFULL Full scale error Co Ro Output capacitive load Buffer amplifier output impedance MITSUBISHI ELECTRIC 2000-8-31.revB ( 2 / 5 ) MITSUBISHI M62342P,FP 8-BIT 2CH D-A CONVERTER WITH BUFFER AMPLIFIERS AC CHARACTERISTICS (VCC=+5V10%,GND=0V,Ta=-20 to 85C unless otherwise noted) Symbol tCKL tCKH tCR tCF tDCH tCHD tCHL tLDC tLDH tLDD Parameter Clock "L" pulse width Clock "H" pulse width Clock rise time Clock fall time Data setup time Data hold time LD setup time LD hold time LD "H" pulse time D-A output setting time CL100pF VAO:0.5V<=>4.5V The time until the output becomes the final value of 1/2LSB Test condition Limits Min 200 200 200 30 60 200 100 100 300 Typ Max Unit nS nS nS nS nS nS nS nS S TIMING CHART tCR tCKH tCF CLK tCKL DI tDCH tCHD tLDH tCHL tLDD D-A OUTPUT tLDC LD MITSUBISHI ELECTRIC 2000-8-31.revB ( 3 / 5 ) MITSUBISHI M62342P,FP 8-BIT 2CH D-A CONVERTER WITH BUFFER AMPLIFIERS DIGITAL DATA FORMAT Last LSB First MSB D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DAC DATA DAC SELECT DATA (1) DAC SELECT DATA D8 0 1 0 1 D9 0 0 1 1 DAC selection AO1selection AO2selection Don't care Don't care (2) DAC DATA D0 0 1 0 1 : 0 1 D1 0 0 1 1 : 1 1 D2 0 0 0 0 : 1 1 D3 0 0 0 0 : 1 1 D4 0 0 0 0 : 1 1 D5 0 0 0 0 : 1 1 D6 0 0 0 0 : 1 1 D7 0 0 0 0 : 1 1 DAC output VCC/256 X1 VCC/256 X2 VCC/256 X3 VCC/256 X4 : VCC/256 X255 VCC/256 X256 TIMING CHART (MODEL) DI CLK LD D-A OUTPUT D9 D8 D7 D6 D5 D2 D1 D0 MITSUBISHI ELECTRIC 2000-8-31.revB ( 4 / 5 ) MITSUBISHI M62342P,FP 8-BIT 2CH D-A CONVERTER WITH BUFFER AMPLIFIERS PRECAUTION FOR USE Supply voltage terminal(Vcc) is also used for D-A converter upper reference voltage setting. IF ripple or spike is input this terminal,accuracy of D-A conversion is down. So,when use this device,please connect capacitor among Vcc to GND for stable D-A conversion. This IC's output amplifier has an advantage to capacitive load.So it's no problem at device action when connect capacitor (0.1F MAX) among output to GND for every noise eliminate. < Standard application circuit > 1 Ao1 Analog output terminals LD 8 2 Ao2 CLK 7 3 DI 6 MCU 4 VCC 5V 10F GND 5 Keep safety first in your circuit designs! * Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better andmore reliable, but there is always the possibility that trouble may occur with them. Trouble withsemiconductors may lead to personal injury,fire or property damage. Remember to give due considerationto safety when making your circuit design, in order to prevent fires from spreading, redundancy, malfunctionor other mishap. MITSUBISHI ELECTRIC 2000-8-31.revB ( 5 / 5 ) |
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