This document describes a high-performance 24-bit ∑-∆ ADC with a dynamic range of 115 dB and selectable oversampling rates. The product also features a flexible SPI interface, fully differential modulator input, on-chip differential amplifier, and reference buffer.
The AD7764 is a high‑performance 24‑bit sigma‑delta analog‑to‑digital converter offering up to 312 kSPS fully filtered output. It features selectable oversampling rates, on‑chip differential amplifiers, reference buffering, and an overrange alert pin. The device includes a full‑band FIR filter and low‑power mode that reduces dissipation without sacrificing speed.
Designed for data‑acquisition systems, vibration analysis and instrumentation, the AD7764 is supplied in a 28‑lead TSSOP package and operates over a commercial temperature range of –40 °C to +85 °C. It supports SPI communication, daisy‑chaining, and synchronization via a SYNC pin.
| Dynamic Range (256×, Normal Power) | 115 dB typ |
|---|---|
| Signal‑to‑Noise Ratio (SNR) | 109 dB typ |
| Package | 28‑lead TSSOP |
The device is rated for a commercial temperature range of –40 °C to +85 °C.