AD7790 is a low power, 16-bit buffered Sigma-Delta ADC with 3.5ppm typical integral nonlinearity, 1µA maximum current consumption, 2.5V to 5.25V operating voltage, internal clock oscillator, programmable gain amplifier, rail-to-rail input buffer, VDD monitor channel, -40°C to +105°C operating temperature range, 10-lead MSOP package, 3-wire serial SPI®, QSPI™, MICROWIRE™ and DSP compatible Schmitt trigger.
The AD7790 is a low‑power, 16‑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 programmable gain (1‑8), and provides update rates from 9.5 Hz to 120 Hz with typical RMS noise of 1.1 pV at the lowest rate.
Typical applications include smart transmitters, battery‑powered instrumentation, temperature, pressure and weight‑scale measurements. The device is supplied in a 10‑lead MSOP package and includes built‑in reference, rail‑to‑rail input buffer, and extensive digital filtering options.
| Power supply voltage | 2.5 V to 5.25 V |
|---|---|
| Power‑down current | 1 pA max |
| RMS noise (9.5 Hz) | 1.1 pV |
| Integral nonlinearity | 3.5 ppm typical |
| Operating temperature range | -40 °C to +105 °C |
| Resolution | 16‑bit peak‑to‑peak |
The AD7790 operates from a 2.5 V to 5.25 V power supply.
At a 9.5 Hz update rate the RMS noise is typically 1.1 pV.
The AD7790 is offered in a 10‑lead MSOP (Mini Small Outline Package).