MAX192 Low-Power, 8-Channel, Serial 10-Bit ADC - Robotics UWA

Low-Power, 8-Channel,Serial 10-Bit ADCELECTRICAL CHARACTERISTICS (continued)(V DD = 5V ±5%, f CLK = 2.0MHz, external clock (50% duty cycle), 15 clocks/conversion cycle (133ksps), 4.7µF capacitor at VREF pin,T A = T MIN to T MAX, unless otherwise noted. Typical values are at T A = +25°C.)PARAMETER SYMBOLCONDITIONSMIN TYP MAX UNITSExternal Clock FrequencyExternal compensation, 4.7µFInternal compensation (Note 5)0.10.12.00.4 MHzCommon-mode range (any input) (Note 6) 0 V DDUsed for data transfer only10ANALOG INPUTSingle-ended range (unipolar only)0 V REFAnalog Input Voltage Unipolar0 V REF VDifferential rangeBipolar- V ––2 R –— E F –+ V ––2 – R — E F –MAX192Multiplexer Leakage CurrentOn/off leakage current, V IN = 0V, 5V±0.01 ±1Input Capacitance(Note 5)16INTERNAL REFERENCE (reference buffer enabled)VREF Output VoltageT A = +25°C4.076 4.096 4.116VREF Short-Circuit Current30VREF Tempco±30Load Regulation (Note 7)0mA to 0.5mA output load2.5Capacitive Bypass at VREFInternal compensation0External compensation 4.7Capacitive Bypass at REFADJInternal compensation 0.01External compensation 0.01REFADJ Adjustment Range ±1.5 %EXTERNAL REFERENCE AT VREF (buffer disabled, VREF = 4.096V)µApFVmAppm/°CmVVInput Voltage Range 2.5DD +V50mVInput Current 200 350 µAInput Resistance 12 20 kΩShutdown VREF Input Current 1.5 10 µABuffer Disable ThresholdREFADJV DD -50mVEXTERNAL REFERENCE AT REFADJCapacitive Bypass at VREFInternal compensation mode 0External compensation mode 4.7µFReference-Buffer Gain 1.678 V/VREFADJ Input Current ±50 µAµFµFV_______________________________________________________________________________________ 3