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MAX1291 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX1291 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 20 page 250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VDD = VLOGIC = +2.7V to +3.6V, COM = GND, REFADJ = VDD, VREF = +2.5V, 4.7µF capacitor at REF pin, fCLK = 4.8MHz (50% duty cycle); TA = TMIN to TMAX unless otherwise noted. Typical values are at TA = +25°C.) CONDITIONS UNITS MIN TYP MAX SYMBOL PARAMETER 0 to 0.5mA output load To power down the internal reference For small adjustments TA = 0°C to +70°C On/off-leakage current, VIN = 0 or VDD Unipolar, VCOM = 0 V 1.0 VDD + 50mV VREF REF Input Voltage Range µF 4.7 10 Capacitive Bypass at REF µF 0.01 1 Capacitive Bypass at REFADJ mV/mA 0.2 0.5 Load Regulation (Note 7) V VDD - 1.0 REFADJ High Threshold mV ±100 REFADJ Input Range ±20 ppm/°C TCREF REF Temperature Coefficient mA 15 REF Short-Circuit Current V 2.49 2.5 2.51 REF Output Voltage pF 12 CIN Input Capacitance µA ±0.01 ±1 Multiplexer Leakage Current V Analog Input Voltage Range Single-Ended and Differential (Note 6) 0VREF VIN CS = VDD ISOURCE = 1mA ISINK = 1.6mA VIN = 0 or VDD VLOGIC = 2.7V µA ±0.1 ±1 ILEAKAGE Three-State Leakage Current V VLOGIC - 0.5 VOH Output High Voltage V 0.4 VOL Output Low Voltage pF 15 CIN Input Capacitance µA ±0.1 ±1 IIN Input Leakage Current mV 200 VHYS Input Hysteresis 2.0 CS = VDD pF 15 COUT Three-State Output Capacitance Bipolar, VCOM = VREF/2 -VREF/2 +VREF/2 VREF = 2.5V, fSAMPLE = 250ksps µA 200 300 IREF REF Input Current Shutdown mode 2 VLOGIC = 1.8V V 1.5 VIH Input High Voltage VLOGIC = 1.8V V 0.5 VIL Input Low Voltage VLOGIC = 2.7V 0.8 ANALOG INPUTS INTERNAL REFERENCE EXTERNAL REFERENCE AT REF DIGITAL INPUTS AND OUTPUTS |
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