AD7791 is a low-power, buffered 24-bit Sigma-Delta ADC from Analog Devices. It features low power consumption, wide dynamic range, high resolution, and strong anti-interference ability. It can be widely used in smart transmitters, battery applications, portable instrumentation, temperature measurement, pressure measurement, and 4 to 20 mA loops.
The AD7791 is a low‑power, 24‑bit sigma‑delta analog‑to‑digital converter designed for low‑frequency measurement applications. It operates from a 2.5 V to 5.25 V supply, offers a 19.5‑bit peak‑to‑peak resolution, and includes a rail‑to‑rail input buffer, Vop monitor, and internal clock oscillator.
The datasheet provides detailed specifications, pin descriptions, timing characteristics, absolute maximum ratings, grounding and layout recommendations, and ordering information for the 10‑lead MSOP package.
| Power Supply Voltage | 2.5 V to 5.25 V |
|---|---|
| Power‑down Current | 1 pA max |
| Resolution | 19.5 bits peak‑to‑peak (22 bits effective) |
| Integral Nonlinearity | 3.5 ppm typical |
| Temperature Range | -40 °C to +105 °C |
| Package | 10‑lead MSOP |
The AD7791 operates from 2.5 V to 5.25 V.
In power‑down mode the device draws 1 pA maximum.
The AD7791 is supplied in a 10‑lead MSOP package.