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3 V/5 V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC AD7827
FUNCTIONAL BLOCK DIAGRAM
VREFIN/VREFOUT 2.5V REF VDD GND VDD DETECT COMP
FEATURES 8-Bit Half-Flash ADC with 420 ns Conversion Time 200 ns Acquisition Time 8-Lead Package On-Chip Track-and-Hold On-Chip 2.5 V Reference with 2% Tolerance Operating Supply Range: 3 V ؎ 10% and 5 V ؎ 10% Specifications @ 3 V and 5 V DSP/Microcontroller Compatible Serial Interface Automatic Power-Down at End of Conversion Input Ranges 0 V to 2 V, VDD = 3 V 0 V to 2.