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ADuC847BCPZ62-3 Datasheet(PDF) 6 Page - Analog Devices |
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ADuC847BCPZ62-3 Datasheet(HTML) 6 Page - Analog Devices |
6 / 108 page ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 6 of 108 Parameter Min Typ Max Unit Conditions AUXILIARY ADC ANALOG INPUTS (ADuC845 Only) Differential Input Voltage Ranges5,6 Bipolar Mode (ADC1CON.5 = 0) ±VREF V REFIN = REFIN(+) − REFIN(−) (or Int 1.25 VREF) Unipolar Mode (ADC1CON.5 = 1) 0 – VREF V REFIN = REFIN(+) − REFIN(−) (or Int 1.25 VREF) Average Analog Input Current 125 nA/V Analog Input Current Drift ±2 pA/V/°C Absolute AIN/AINCOM Voltage Limits2, 7 AGND − 0.03 AVDD + 0.03 V Normal Mode Rejection 50 Hz/60 Hz2 On AIN and REFIN 75 dB 50 Hz/60 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H, chop on, REJ60 on 100 dB 50 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H, chop on 67 dB 50 Hz/60 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H, chop off, REJ60 on 100 dB 50 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H, chop off ADC SYSTEM CALIBRATION Full-Scale Calibration Limit +1.05 × FS V Zero-Scale Calibration Limit −1.05 × FS V Input Span 0.8 × FS 2.1 × FS V DAC Voltage Range 0 – VREF V DACCON.2 = 0 0 – AVDD V DACCON.2 = 1 Resistive Load 10 kΩ From DAC output to AGND Capactive Load 100 pF From DAC output to AGND Output Impedance 0.5 Ω ISINK 50 µA DC Specifications8 Resolution 12 Bits Relative Accuracy ±3 LSB Differential Nonlinearity −1 LSB Guaranteed 12-bit monotonic Offset Error ±50 mV Gain Error ±1 % AVDD range ±1 % VREF range AC Specifications2, 8 Voltage Output Settling Time 15 µs Settling time to 1 LSB of final value Digital-to-Analog Glitch Energy 10 nVs 1 LSB change at major carry INTERNAL REFERENCE ADC Reference Chop enabled Reference Voltage 1.25 − 1% 1.25 1.25 + 1% V Initial tolerance @ 25°C, VDD = 5 V Power Supply Rejection 45 dB Reference Tempco 100 ppm/°C DAC Reference Reference Voltage 2.5 – 1% 2.5 2.5 + 1% ±1% V Initial tolerance @ 25°C, VDD = 5 V Power Supply Rejection 50 dB Reference Tempco ±100 ppm/°C TEMPERATURE SENSOR (ADuC845 Only) Accuracy ±2 °C Thermal Impedance 90 °C/W MQFP 52 °C/W LFCSP Footnotes at end of table. |
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