AD7863

FEATURES Two fast 14-bit ADCs Four input channels Simultaneous sampling and conversion 5.2 μs conversion time Single supply operation Selection of input ranges ±10 V for AD7863-10 ±2.5 V for AD7863-3 0 V to 2.5 V for AD7863-2 High speed parallel interface Low power, 70 mW typical Power saving mode, 105 μW maximum Overvoltage protection on analog inputs 14-bit lead compatible upgrade to AD7862 GENERAL DESCRIPTION The AD7863 is a high speed, low power, dual 14-bit analog-todigital converter that operates from a single 5 V supply. The part contains two 5.2 μs successive approximation ADCs, two track/hold amplifiers, an internal 2.5 V reference and a high speed parallel interface. Four analog inputs are grouped into two channels (A and B) selected by the A0 input. Each channel has two inputs (VA1 and VA2 or VB1 and VB2) that can be sampled and converted simultaneously, thus preserving the relative phase information of the signals on both analog inputs. The part accepts an analog input...