Key facts
- Brand
- Analog Devices
- Model
- AD7791
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Analog Devices AD7791 24‑Bit Sigma‑Delta ADC Datasheet
The AD7791 is a low‑power, complete analog front‑end for low‑frequency measurement applications. It features a 24‑bit sigma‑delta converter, selectable buffered or unbuffered differential input, and an internal clock that eliminates the need for an external reference.
The device operates from a 2.5 V to 5.25 V supply, offers programmable output data rates from 9.5 Hz to 120 Hz, and provides low RMS noise (1.1 µV at 9.5 Hz). It is housed in a 10‑lead MSOP package and is suited for smart transmitters, battery‑powered instruments, and sensor measurement systems.
Analog Devices AD7791 specifications
| Power Supply Voltage | 2.5 V to 5.25 V |
|---|---|
| Normal Supply Current | 75 µA max |
| Power‑down Current | 1 µA max |
| RMS Noise (9.5 Hz) | 1.1 µV rms |
| Resolution | 19.5‑bit p‑p (22‑bit effective) |
| Operating Temperature Range | –40 °C to +105 °C |
| Package | 10‑lead MSOP |
Source: Analog Devices AD7791 24‑Bit Sigma‑Delta ADC Datasheet
All Analog Devices AD7791 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum power‑down current of the AD7791?
The power‑down current is specified as 1 µA max.
From: Analog Devices AD7791 24‑Bit Sigma‑Delta ADC Datasheet
What is the RMS noise at the lowest update rate?
The RMS noise is 1.1 µV at a 9.5 Hz update rate.
From: Analog Devices AD7791 24‑Bit Sigma‑Delta ADC Datasheet
What is the operating voltage range for the AD7791?
The AD7791 operates from 2.5 V to 5.25 V.
How much current does the AD7791 draw in power‑down mode?
In power‑down mode the device draws 1 pA maximum.