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ADUC816BS Datasheet(PDF) 4 Page - Analog Devices |
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ADUC816BS Datasheet(HTML) 4 Page - Analog Devices |
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4 / 68 page  REV. 0 –4– ADuC816–SPECIFICATIONS1 Parameter ADuC816BS Unit Test Conditions/Comments INTERNAL REFERENCE ADC Reference Reference Voltage 1.25 ± 1% V min/max Initial Tolerance @ 25 °C, VDD = 5 V Power Supply Rejection 45 dBs typ Reference Tempco 100 ppm/ °C typ DAC Reference Reference Voltage 2.5 ± 1% V min/max Initial Tolerance @ 25 °C, VDD = 5 V Power Supply Rejection 50 dBs typ Reference Tempco ±100 ppm/ °C typ ANALOG INPUTS/REFERENCE INPUTS Primary ADC Differential Input Voltage Ranges 8, 9 External Reference Voltage = 2.5 V RN2, RN1, RN0 of ADC0CON Set to Bipolar Mode (ADC0CON.3 = 0) ±20 mV 0 0 0 (Unipolar Mode 0 mV to 20 mV) ±40 mV 0 0 1 (Unipolar Mode 0 mV to 40 mV) ±80 mV 0 1 0 (Unipolar Mode 0 mV to 80 mV) ±160 mV 0 1 1 (Unipolar Mode 0 mV to 160 mV) ±320 mV 1 0 0 (Unipolar Mode 0 mV to 320 mV) ±640 mV 1 0 1 (Unipolar Mode 0 mV to 640 mV) ±1.28 V 1 1 0 (Unipolar Mode 0 V to 1.28 V) ±2.56 V 1 1 1 (Unipolar Mode 0 V to 2.56 V) Analog Input Current 2 ±1 nA max Analog Input Current Drift ±5pA/°C typ Absolute AIN Voltage Limits AGND + 100 mV V min AVDD – 100 mV V max Auxiliary ADC Input Voltage Range 8, 9 0 to VREF V Unipolar Mode, for Bipolar Mode See Note 11 Average Analog Input Current 125 nA/V typ Input Current Will Vary with Input Average Analog Input Current Drift 2 ±2 pA/V/ °C typ Voltage on the Unbuffered Auxiliary ADC Absolute AIN Voltage Limits 10 AGND – 30 mV V min AVDD + 30 mV V max External Reference Inputs REFIN(+) to REFIN(–) Range 2 1V min AVDD V max Average Reference Input Current 1 µA/V typ Both ADCs Enabled Average Reference Input Current Drift ±0.1 nA/V/ °C typ “NO Ext. REF” Trigger Voltage 0.3 V min NOXREF Bit Active if VREF < 0.3 V 0.65 V max NOXREF Bit Inactive if VREF > 0.65 V ADC SYSTEM CALIBRATION Full-Scale Calibration Limit +1.05 × FS V max Zero-Scale Calibration Limit –1.05 × FS V min Input Span 0.8 × FS V min 2.1 × FS V max ANALOG (DAC) OUTPUTS Voltage Range 0 to VREF V typ DACRN = 0 in DACCON SFR 0 to AVDD V typ DACRN = 1 in DACCON SFR Resistive Load 10 k Ω typ From DAC Output to AGND Capacitive Load 100 pF typ From DAC Output to AGND Output Impedance 0.5 Ω typ ISINK 50 µA typ TEMPERATURE SENSOR Accuracy ±2 °C typ Thermal Impedance ( θJA)90 °C/W typ |
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