AD5748 is a single-channel, low cost, high precision analog-to-digital converter with programmable voltage/current output ranges for process control, actuator control and PLC applications.
The AD5748 provides programmable current output ranges of 0 mA‑21 mA and 4 mA‑21 mA, and voltage output ranges of 0‑5 V, 0‑10.5 V, and ±10.5 V. It features a flexible SPI‑compatible serial interface, on‑chip fault detection, PEC error checking, and an asynchronous CLEAR function. The device operates from a dual‑supply range of ±12 V to ±24 V and is intended for PLC and industrial process‑control applications.
The datasheet includes functional block diagrams, pin descriptions, timing characteristics, absolute maximum ratings, and layout guidelines. It also covers thermal considerations, transient‑voltage protection, and options for galvanically isolated interfaces.
| Current output ranges | 0 mA‑21 mA, 4 mA‑21 mA |
|---|---|
| Voltage output ranges | 0‑5 V, 0‑10.5 V, ±10.5 V |
| Power supply range | AVDD: +12 V to +24 V (±10%); AVSS: –12 V to –24 V (±10%) |
| Operating temperature range | –40 °C to +105 °C |
| Output noise (0.1 Hz‑10 Hz) | 2.5 µV rms |
| Output impedance (0‑5 V range) | 0.12 Ω |
It supports two programmable current ranges: 0 mA to 21 mA and 4 mA to 21 mA.
The device can output 0 V‑5 V, 0 V‑10.5 V, or ±10.5 V, depending on the selected range.
It requires dual analog supplies of ±12 V to ±24 V (each with ±10% tolerance).
The device operates from –40 °C up to +105 °C.