The AD7732 is a high precision, high throughput analog front end. True 16-bit p-p resolution is achievable with a total conversion time of 500 µs (2 kHz channel switching), making it ideally suitable for high resolution multiplexing applications.
The AD7732 is a high‑precision, high‑throughput 24‑bit analog‑to‑digital converter featuring two fully differential inputs, selectable unipolar or bipolar ranges up to ±10 V, and over‑voltage tolerance to +16.5 V. It operates from a single 5 V analog supply and provides a 3‑wire serial interface compatible with SPI, QSPI, Microwire and DSP controllers.
The device offers up to 500 Hz channel‑switching speed with 18‑bit peak‑to‑peak resolution, and maintains performance over an industrial temperature range of –40 °C to +105 °C. Detailed specifications, timing diagrams, pin configurations, and calibration procedures are provided for designers of multiplexing, process‑control, and instrumentation applications.
| Resolution | 24 bits, no missing codes |
|---|---|
| Input Range | ±10 V differential, over‑voltage tolerant to +16.5 V |
| Supply Voltage | 5 V analog supply (single‑supply operation) |
| Conversion Rate | 18‑bit p‑p resolution at 500 Hz |
| Operating Temperature | -40 °C to +105 °C |
It supports differential input ranges up to ±10 V and can tolerate over‑voltage up to +16.5 V without affecting adjacent channels.
The AD7732’s 3‑wire serial interface is compatible with SPI™, QSPI™, Microwire™, and DSP controllers.
The device is specified for operation from –40 °C to +105 °C.
The converter provides 24‑bit resolution with no missing codes.