The AD7719 is a low voltage, low power, factory-calibrated 16-/24-bit dual analog-to-digital converter (ADC) from Analog Devices.
The AD7719 is a complete analog front‑end for low‑frequency measurement applications. It contains two high‑resolution sigma‑delta ADCs (a 24‑bit main channel and a 16‑bit auxiliary channel), switchable excitation current sources, low‑side power switches, a digital I/O port, and an on‑chip temperature sensor. Signals can be converted directly from a transducer without external conditioning, and the device operates from a single 3 V or 5 V supply.
Key features include factory‑calibrated operation, programmable gain front‑end, simultaneous sampling of two channels, separate reference inputs, and a software‑programmable output data rate. The part is offered in 28‑lead SOIC and TSSOP packages and is suited for sensor measurement, temperature and pressure measurement, weigh‑scale applications, and portable instrumentation.
| Main ADC Resolution | 24‑bit |
|---|---|
| Auxiliary ADC Resolution | 16‑bit |
| Supply Voltage | 3 V or 5 V |
| Normal Mode Power Consumption | 1.5 mA typ @ 3 V |
| Power‑Down Current | 10 µA max |
It has two independent ADCs (16‑ and 24‑bit).
The device operates from a single 3 V or 5 V supply.
Normal mode draws about 1.5 mA at 3 V.