AD7400 Rev. B is an isolated Sigma-Delta modulator. It features a 10 MHz clock rate, second-order modulator, ±2 LSB INL typical at 16 bits, 3.5 μV/°C maximum offset drift, etc.
The AD7400 is a second‑order sigma‑delta modulator that converts an analog input to a high‑speed 1‑bit data stream. It features on‑chip digital isolation, an internal reference, and operates from a 4.5 V to 5.25 V supply.
The device is offered in a 16‑lead SOIC package, supports a -40 °C to +105 °C temperature range, and meets UL, CSA, and VDE safety certifications. Detailed specifications, timing diagrams, pin functions, and absolute maximum ratings are provided in the handbook.
| Resolution | 16 bits |
|---|---|
| Integral Nonlinearity (typical) | +2 LSB |
| Power consumption (max) | 18 mA at 5.25 V |
| Operating temperature range | -40 °C to +105 °C |
| Clock rate | 10 MHz |
| Isolation voltage (UL 1577) | 3750 Vrms for 1 min |
The AD7400 operates with a 10 MHz clock rate.
It is rated for 3750 Vrms isolation for 1 minute according to UL 1577.
The device consumes up to 18 mA at a 5.25 V supply.
It operates from –40 °C to +105 °C.