The AD7734 is a high precision, high throughput analog front end. It has a true 16-bit p-p resolution with a total conversion time of 500 µs (2 kHz channel switching), making it ideally suited for high resolution multiplexing applications. The part can be configured via a simple digital interface, which allows users to balance the noise performance against data throughput up to a 15.4 kHz. The analog front end features four single-ended input channels with unipolar or true bipolar input ranges to ±10 V while operating from a single +5 V analog supply. The part has an overrange and underrange detection capability and accepts an analog input overvoltage protection.
The AD7734 high‑precision, high‑throughput analog‑to‑digital converter offers four single‑ended inputs, selectable input ranges up to +10 V, and over‑voltage tolerance up to +16.5 V. It operates from a single 5 V analog supply and supports SPI, QSPI, Microwire, and DSP‑compatible serial interfaces with Schmitt‑triggered logic inputs.
Key specifications include 24‑bit resolution with no missing codes, conversion rates up to 12.2 kHz (chopping enabled), and operation over an industrial temperature range of –40 °C to +105 °C. The device is supplied in a 28‑lead TSSOP package and is intended for PLC/DCS, multiplexing, process control, and industrial instrumentation applications.
| Resolution | 24 bits |
|---|---|
| Input Range | +5 V, +10 V |
| Over‑voltage Tolerance | Up to +16.5 V |
| Supply Voltage | 5 V analog, 3 V or 5 V digital |
| Package | 28‑lead TSSOP |
| Operating Temperature | -40 °C to +105 °C |
| Maximum Conversion Rate (chopping enabled) | 12.190 kHz |
The device can achieve a conversion rate of 12.190 kHz when chopping is enabled.
The AD7734 is supplied in a 28‑lead TSSOP package.
It operates from –40 °C up to +105 °C.