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ADUC814ARU Datasheet(PDF) 5 Page - Analog Devices |
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ADUC814ARU Datasheet(HTML) 5 Page - Analog Devices |
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5 / 72 page  ADuC814 Rev. A | Page 5 of 72 Parameter VDD = 5 V VDD = 3 V Unit Test Conditions TEMPERATURE MONITOR9 Voltage Output at 25ºC 650 650 mV typ Voltage TC –2 –2 mV/ºC typ Accuracy 3 3 ºC typ 2.5 V internal reference Accuracy 1.5 1.5 ºC typ 2.5 V external reference DAC CHANNEL SPECIFICATIONS DAC Load to AGND RL = 10 kΩ, CL = 100 pF DC ACCURACY10 Resolution 12 12 Bits Relative Accuracy +3 +3 LSB typ Differential Nonlinearity11 –1 –1 LSB max Guaranteed montonic 1/2 1/2 LSB typ Offset Error 50 50 mV max VREF range Gain Error 1 1 % max VREF range 1 1 % typ AVDD range Gain Error Mismatch 0.5 0.5 % typ Of full scale on DAC1 ANALOG OUTPUTS Voltage Range_0 0 to VREF Volts DAC VREF = 2.5 V Voltage Range_1 0 to VDD Volts DAC VREF = VDD Output Impedance 0.5 0.5 Ω typ ISINK 50 50 µA typ DAC AC Specifications Voltage Output Settling Time 15 15 µs typ Full-scale settling time to within ½ LSB of final value Digital-to-Analog Glitch Energy 10 10 nVs typ 1 LSB change at major carry REFERENCE INPUT/OUTPUT REFERENCE OUTPUT Output Voltage (VREF) 2.5 2.5 V Accuracy 2.5 2.5 % max Of VREF measured at the CREF pin Power Supply Rejection 47 57 dB typ Reference Tempco 100 100 ppm/ºC typ Internal VREF Power-On Time12 80 80 ms typ EXTERNAL REFERENCE INPUT13 Internal band gap reference deselected via ADCCON2.6 Voltage Range (VREF)14 1.0 1.0 V min VDD VDD V max Input Impedance 20 20 kΩ typ Input Leakage 10 10 µA max POWER SUPPLY MONITOR (PSM) VDD Trip Point Selection Range 2.63 2.63 V 2.93 2.93 V Four trip points selectable in this range 3.08 3.08 V programmed via TP1–0 in PSMCON 4.63 V VDD Power Supply Trip Point Accuracy 3.5 3.5 % max WATCH DOG TIMER (WDT)14 Timeout Period 0 0 ms min Nine time-out periods selectable in this range 2000 2000 ms max programmed via PRE3–0 in WDCON LOGIC INPUTS INPUT VOLTAGES14 All Inputs except SCLOCK, RESET, and XTAL1 VINL, Input Low Voltage 0.8 0.4 V max VINH, Input High Voltage 2.0 2.0 V min |
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