GENERAL DESCRIPTION
The AD7765 is a high performance, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC). It combines wide input bandwidth, high speed, and performance of 112 dB dynamic range at a 156 kHz output data rate. With excellent dc specifications, the converter is ideal for high speed data acquisition of ac signals where dc data is also required.

FEATURES
    High performance 24-bit Σ-Δ ADC
    115 dB dynamic range at 78.125 kHz output data rate
    112 dB dynamic range at 156 kHz output data rate
    156 kHz maximum fully filtered output word rate
    Pin-selectable oversampling rates of 128× and 256×
    Low power mode
    Flexible serial peripheral interface (SPI)
    Fully differential modulator input
    On-chip differential amplifier for signal buffering
    On-chip reference buffer
    Full band low-pass finite impulse response (FIR) filter
    Overrange alert pin
    Digital gain correction registers
    Power-down mode
    Synchronization of multiple devices via the SYNC pin
    Daisy chaining

APPLICATIONS
    Data acquisition systems
    Vibration analysis
    Instrumentation