The AD7192 Rev. A is a 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA from Analog Devices. It features ultralow noise, 24-bit precision, and 128-times programmable gain.
The AD7192 is a low‑noise, 24‑bit sigma‑delta analog‑to‑digital converter designed for high‑precision measurement applications such as weigh scales, strain‑gauge transducers, and medical instrumentation. It offers two differential or four pseudo‑differential input channels, an on‑chip programmable gain amplifier (1‑128), and a selectable internal or external clock.
The device operates from a 3 V to 5.25 V supply, draws up to 4.35 mA, and is housed in a 24‑lead TSSOP package. It provides a 3‑wire serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP protocols, and includes digital filter options for 50 Hz/60 Hz rejection and zero‑latency operation.
| RMS noise (gain = 128, 4.7 Hz) | 11 nV |
|---|---|
| Output data rate | 4.7 Hz to 4.8 kHz |
| Supply voltage (AVop) | 3 V to 5.25 V |
| Supply current | 4.35 mA |
| Package | 24‑lead TSSOP |
| Temperature range | -40 °C to +105 °C |
| Gain drift | 1 ppm/°C |
| Input channels | 2 differential / 4 pseudo‑differential |
The AD7192 operates from 3 V to 5.25 V (AVop).
It provides two differential or four pseudo‑differential input channels.
The RMS noise is 11 nV under those conditions.
The device draws up to 4.35 mA.