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ADUCM322I Datasheet(PDF) 5 Page - Analog Devices |
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ADUCM322I Datasheet(HTML) 5 Page - Analog Devices |
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5 / 23 page  Data Sheet ADuCM322i Rev. 0 | Page 5 of 23 Parameter Symbol Min Typ Max Unit Test Conditions/Comments EXTERNAL REFERENCE INPUT Range1 1.8 2.5 V ADC Input Current 200 µA BUFFERED REFFERNCE OUTPUT Output Voltage 2.504 V Accuracy ±8 mV TA = 25°C, load = 1.2 mA Reference Temperature Coefficient1 ±15 µV/°C 100 nF from BUF_VREF2V5 to AGND4 Output Impedance 10 Ω TA = 25°C Load Current1 1.2 mA VDAC CHANNEL SPECIFICATIONS RL = 5 kΩ, CL = 100 pF2 DC Accuracy1 12 Bits 1 LSB = 2.5 V/212 Resolution1 12 Bits Number of data bits Relative Accuracy3 INL ±4 LSB 1 LSB = 2.5 V/212 Differential Nonlinearity3 DNL +1/−0.99 LSB Guaranteed monotonic, 1 LSB = 2.5 V/212 Offset Error ±3 ±15 mV 2.5 V internal reference, DAC Output Code 0 Drift ±18 µV/°C Gain Error4 ±0.3 ±0.85 % 0 V to internal VREF range ±0.4 ±1 % 0 V to AVDD range Drift 6.5 ppm/°C Excluding reference drift Mismatch 0.1 % % of full scale on DAC0 Analog Outputs Output Voltage Range 11 0.15 2.5 V Output Voltage Range 21 0.15 AVDDx − 0.15 V Output Impedance 2 Ω DAC AC Characteristics Output Settling Time 10 µs Settled to ±1 LSB Glitch Energy ±20 nV-sec 1 LSB change when the maximum number of bits changes simultane- ously in the DACxDAT register COMPARATOR Input Offset Voltage ±10 mV Bias Current 1 nA Voltage Range1 AGNDx AVDDx − 1.2 V Capacitance 7 pF Hysteresis1 8.5 15 mV When enabled in software Response Time 7 µs AFECOMP, Bits[2:1] = 0 TEMPERATURE SENSOR Indicates die temperature, see Figure 9 Resolution 0.5 °C When precision calibrated by the user5 Accuracy1 1.34 1.43 V ADC measured voltage for temperature sensor channel without calibration, TA = 25°C POWER-ON RESET POR 2.85 2.9 V WATCHDOG TIMER WDT Timeout Period 32 sec Default at power-up FLASH/EE MEMORY Endurance1 10,000 Cycles Data Retention1 20 Years TJ = 85°C |
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