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ADUC846BCP8-5 Datasheet(PDF) 2 Page - Analog Devices |
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ADUC846BCP8-5 Datasheet(HTML) 2 Page - Analog Devices |
2 / 20 page SPECIFICATIONS1 PRELIMINARY TECHNICAL DATA (AVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, DVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) = 2.5 V, REFIN(–) = AGND; AGND = DGND = 0 V; XTAL1/XTAL2 = 32.768 kHz Crystal; all specifications TMIN, to TMAX unless otherwise noted.). PARAMETER MIN TYP MAX UNITS CONDITION PRIMARY ADC Conversion Rate 5.35 19.79 105 Hz On Both Channels No Missing Codes2 16 Bits 19.79Hz Update Rate Resolution 13.5 Bits Pk-Pk Range = ± 20mV, 20Hz Update Rate 16 Bits Pk-Pk Range = ± 2.56V, 20Hz Update Rate Output Noise See Tables X and XI in ADuC836 Datasheet Output Noise varies with selected Update Rates and Gain Range Integral Non Linearity ± 15 ppm of FSR 1 LSB16 Offset Error3 ± 3 µV Offset Error Drift (vs. Temp) ± 10 nV/°C Full-Scale Error4 ± 10 µV Gain Error Drift5 (vs. Temp) ± 0.5 ppm/°C ADC Range Matching ± 2 µV AIN=18mV Power Supply Rejection 80 dBs AIN=1V, Range=± 2.56V 113 dBs AIN=7.8mV, Range=± 20mV Common Mode DC Rejection On AIN 95 dBs @DC, AIN=7.8mV, Range=± 20mV On AIN 113 dBs @DC, AIN=1V, Range=± 2.56V Common Mode 50/60Hz Rejection 20 Hz Update Rate On AIN 95 dBs 50/60Hz ± 1Hz, AIN=7.8mV, Range=± 20mV On AIN 90 dBs 50/60Hz ± 1Hz, AIN=1V, Range=± 2.56V Normal Mode 50/60 Hz Rejection On AIN 60 dBs 50/60Hz ± 1Hz, 20 Hz Update Rate PRIMARY ADC ANALOG INPUTS Differential Input Voltage Ranges9,10 Bipolar Mode (ADC0CON.5 = 0) ± 1.024 x VREF/GAIN V VREF = REFIN(+) - REFIN(-) (or Int 1.25V Ref) GAIN = 1 to 128 Unipolar Mode (ADC0CON.5 = 1) 0 1.024 x REFIN/GAIN V VREF = REFIN(+) - REFIN(-) GAIN=1 to 128 Analog Input Current2 ± 1 nA TMAX = 85°C ± 5 nA TMAX = 125°C Analog Input Current Drift ± 5 pA/°C TMAX = 85°C ± 15 pA/°C TMAX = 125°C Absolute AIN Voltage Limits2 AGND + 0.1 AVDD – 0.1 V EXTERNAL REFERENCE INPUTS REFIN(+) to REFIN(–) Range2 1 2.5 AVDD V Average Reference Input Current +/- 1 µA/V Both ADCs Enabled Average Reference Input Current Drift +/- 0.01 nA/V/°C ‘NO Ext. REF’ Trigger Voltage 0.3 0.65 V NOXREF bit active if VREF<0.3V NOXREF bit Inactive if VREF>0.65 Common Mode DC Rejection 125 dBs @DC, AIN=1V, Range=± 2.56V Common Mode 50/60Hz Rejection 90 dBs 50/60Hz ± 1Hz, AIN=1V, Range=± 2.56V Normal Mode 50/60 Hz Rejection 60 dBs 50/60Hz ± 1Hz, 59.4 Hz Update Rate -2- REV. PrA |
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