The AD7732 is a high precision, high throughput analog front end from TI, which features 24-bit resolution, 2 fully differential analog input channels, single supply operation, support 5V or 3V digital supply, SPI, QSPI, MICROWIRE, DSP compatible interface. It can be used in PLC/DCS, multiplexing applications, process control, industrial instrumentation and other occasions.
The AD7732 is a high‑precision, high‑throughput analog‑to‑digital converter featuring two fully differential input channels with selectable input ranges of ±5 V or ±10 V. It operates from a single +5 V analog supply and supports 3‑wire serial interfaces such as SPI, QSPI, and MICROWIRE.
The device includes on‑chip per‑channel system calibration, over‑voltage tolerance up to ±16.5 V, and a temperature range of –40 °C to +105 °C. Detailed specifications cover conversion time, noise performance, power consumption, and absolute maximum ratings, making the AD7732 suitable for PLC/DCS, multiplexing, and industrial instrumentation applications.
| Resolution | 24 bits, no missing codes |
|---|---|
| Input Voltage Range | ±10 V (selectable ±5 V) |
| Over‑Voltage Tolerance | Up to ±16.5 V |
| Power Dissipation (Normal Mode) | 85 mW typical |
| Conversion Time (500 Hz) | 372 µs |
The AD7732 can tolerate input voltages up to ±16.5 V without affecting adjacent channels.
It provides a 24‑bit resolution with no missing codes.
The ADC uses single‑supply operation with a 5 V analog supply and a 3 V or 5 V digital supply.