The AD7701 is a 16-bit ADC that uses a sigma-delta conversion technique. It features a monolithic 16-bit ADC, 0.0015% linearity error, programmable low-pass filter with a corner frequency of 0.1 Hz to 10 Hz, analog input range of 0 V to +2.5 V or -2.5 V, 4 kSPS output data rate, flexible serial interface, and ultralow power consumption.
The AD7701 is a 16‑bit sigma‑delta A/D converter with on‑chip digital filtering, self‑calibration circuitry, and a flexible serial interface. It is intended for low‑frequency, high‑dynamic‑range measurements such as industrial process control, weigh scales, and portable instrumentation.
The document provides functional block diagrams, pin configurations, electrical specifications, timing characteristics, and calibration procedures. It also includes ordering information for the various package options and temperature ranges.
| Resolution | 16 bits |
|---|---|
| Power Dissipation (Normal Operation) | 37 mW max |
| Standby Power Consumption | 10 µW typical (20 pW max) |
| Bipolar Input Range | ±2.5 V |
The AD7701 can output data at up to 4 kSPS.
In standby the device typically consumes only 10 µW, with a maximum of 20 pW.
Yes, it has on‑chip self‑calibration circuitry for zero and full‑scale calibration.