AD7792/AD7793 is a 3-channel, low-noise, low-power, 16/24-bit ∑-Δ ADC with on-chip in-amp and reference.
The AD7792 and AD7793 are 16‑/24‑bit Σ‑Δ analog‑to‑digital converters with integrated instrumentation amplifiers, on‑chip reference, and programmable excitation current sources. They support three differential inputs, operate from 2.7 V to 5.25 V, and provide update rates from 4.17 Hz to 470 Hz.
The datasheet includes detailed specifications, timing diagrams, pin descriptions, and application information for thermocouple, RTD, thermistor, gas analysis, and portable instrumentation uses.
| Supply Voltage (AVDD/DVDD) | 2.7 V to 5.25 V |
|---|---|
| Typical Power‑Down Current | 1 µA max |
| Typical Operating Current | 400 µA |
| Resolution | Up to 24 bits effective |
| Update Rate | 4.17 Hz to 470 Hz |
| Operating Temperature Range | –40 °C to +105 °C |
The device operates from 2.7 V to 5.25 V on both AVDD and DVDD pins.
Typical operating current is 400 µA, with a maximum of 500 µA depending on configuration.
It is rated for –40 °C to +105 °C operating temperature.
The ADC can be programmed for update rates from 4.17 Hz up to 470 Hz.