GENERAL DESCRIPTION
The AD7865 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single 5 V supply. The part contains a 2.4 µs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analog inputs. The part accepts analog input ranges of ±10 V, ±5 V, ±2.5 V, 0 V to 2.5 V and 0 V to 5 V.
   
FEATURES
    Fast (2.4 μs) 14-Bit ADC
    Four Simultaneously Sampled Inputs
    Four Track/Hold Amplifiers
    0.35 μs Track/Hold Acquisition Time
    2.4 μs Conversion Time per Channel
    HW/SW Select of Channel Sequence for Conversion
    Single Supply Operation
    Selection of Input Ranges: ±10 V, ±5 V and ±2.5 V,
        0 V to +5 V and 0 V to +2.5 V
    High Speed Parallel Interface Which Also Allows
        Interfacing to 3 V Processors
    Low Power, 115 mW Typ
    Power Saving Mode, 15 μW Typ
    Overvoltage Protection on Analog Inputs
   
APPLICATIONS
    AC Motor Control
    Uninterruptible Power Supplies
    Industrial Power Meters/Monitors
    Data Acquisition Systems
    Communications