The AD7711 is a complete analog front‑end for low‑frequency measurement, offering a differential input, single‑ended input, and a differential reference. It integrates a programmable gain front‑end, on‑chip digital filter, and self‑calibration features, and can be powered from a single or dual supply.
The device provides two RTD excitation current sources, low power consumption (45 mW normal, 7 mW standby), and is available in 24‑lead DIP and SOIC packages. Detailed specifications cover resolution, input ranges, timing, and absolute maximum ratings. This manual is written in Chinese.
| Power Dissipation (Normal Mode) | 45 mW max |
|---|---|
| Standby Power (Power‑Down) | 7 mW typical |
| RTD Excitation Current | 200 mA nominal |
Yes, it provides two 200 mA constant‑current outputs for 3‑wire and 4‑wire RTD configurations.