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MAX126CEAX Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX126CEAX Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 16 page +2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16 _______________________________________________________________________________________ 3 Multiplexer Leakage Current pF 15 CIN DIN, SCLK, CS Input Capacitance µA ±0.01 ±1 IIN DIN, SCLK, CS Input Leakage V 0.2 VHYST DIN, SCLK, CS Input Hysteresis V 0.8 VIL DIN, SCLK, CS Input Low Voltage 2.0 µA 0.01 10 Shutdown VREF Input Current k Ω 18 25 VREF Input Resistance µA 100 150 VREF Input Current V 1.0 VDD + 50mV VREF Input Voltage Range (Note 9) pF 16 Input Capacitance 0 to VREF V ±VREF / 2 Input Voltage Range, Single- Ended and Differential (Note 6) µA ±0.01 ±1 UNITS MIN TYP MAX SYMBOL PARAMETER (Note 10) VIN = 0V or VDD Unipolar, COM = 0V VDD ≤ 3.6V VREF = 2.500V Bipolar, COM = VREF / 2 On/off leakage current, VCH_ = 0V or VDD CONDITIONS µA ±4.0 IS SHDN Input Current V 0.4 VSL SHDN Input Low Voltage V VDD - 0.4 VSH SHDN Input High Voltage SHDN = 0V or VDD ELECTRICAL CHARACTERISTICS (continued) (VDD = +2.7V to +5.25V; COM = 0V; fSCLK = 2.0MHz; external clock (50% duty cycle); 15 clocks/conversion cycle (133ksps); MAX1248—4.7µF capacitor at VREF pin; MAX1249—external reference, VREF = 2.500V applied to VREF pin; TA = TMIN to TMAX, unless otherwise noted.) V 3.0 VIH DIN, SCLK, CS Input High Voltage VDD > 3.6V V 2.470 2.500 2.530 VREF Output Voltage TA = +25°C (Note 7) mA 30 VREF Short-Circuit Current ppm/°C ±30 VREF Temperature Coefficient MAX1248 µF 0 Capacitive Bypass at VREF Internal compensation mode 4.7 External compensation mode mV 0.35 Load Regulation (Note 8) 0mA to 0.2mA output load µF 0.01 Capacitive Bypass at REFADJ ±1.5 REFADJ Adjustment Range % V VDD - 0.5 REFADJ Buffer-Disable Threshold Capacitive Bypass at VREF Internal compensation mode 0 µF External compensation mode 4.7 Reference-Buffer Gain MAX1248 2.06 V/V MAX1249 2.00 REFADJ Input Current MAX1248 ±50 µA MAX1249 ±10 V 1.1 VDD - 1.1 VSM SHDN Input Mid Voltage ANALOG/COM INPUTS EXTERNAL REFERENCE AT VREF (Buffer disabled) DIGITAL INPUTS (DIN, SCLK, CS, SHDN) EXTERNAL REFERENCE AT REFADJ INTERNAL REFERENCE (MAX1248 only, reference buffer enabled) |
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