Analog Devices Inc. AD7862ARZ-3

Description
The AD7862 is a high-speed, low-power, dual 12-bit analog-to-digital converter (ADC) that operates from a single 5 V supply. It features two 4 µs successive approximation ADCs, two track-hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface. The four analog inputs are grouped into two channels (A & B) selected by the A0 input. Each channel has two inputs (V1 & V2 or V3 & V4) that can be sampled and converted simultaneously, preserving the relative phase information of the signals on both analog inputs. The part accepts analog input ranges of ±10 V (AD7862-10), ±2.5 V (AD7862-3), and 0-2.5 V (AD7862-2). Overvoltage protection on the analog inputs allows the input voltage to go to ±17 V, ±7 V, or 7 V, respectively, without causing damage.

Features
Two fast 12-bit ADCs
Four input channels
4 µs throughput time
Single supply operation
Simultaneous sampling and conversion
Selection of input ranges:
±10 V for AD7862-10
±2.5 V for AD7862-3
0 V to 2.5 V for AD7862-2
High-speed parallel interface
Low power, 60 mW typ
Power-saving mode, 50 µW typ
Overvoltage protection on analog inputs
14-bit pin-compatible upgrade (AD7863)

Applications
AC motor control
Uninterrupted power supplies
Data acquisition systems
Communications