
Analog Devices
GENERAL DESCRIPTION
The AD7764 is a high performance, 24-bit Σ-Δ analog-to-digital converter (ADC). It combines wide input bandwidth, high speed, and performance of 109 dB dynamic range at a 312 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 ∑-∆ ADC
115 dB dynamic range at 78 kHz output data rate
109 dB dynamic range at 312 kHz output data rate
312 kHz maximum fully filtered output word rate
Pin-selectable oversampling rate (64×, 128×, and 256×)
Low power mode
Flexible 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 SYNC pin
Daisy chaining
APPLICATIONS
Data acquisition systems
Vibration analysis
Instrumentation