AD7400A Rev. A is an isolated Sigma-Delta modulator. Its features include a 10 MHz clock rate, second-order modulator, 16 bits with no missing codes, typical ±2 LSB INL, typical 1.5 μV/°C offset drift, on-board digital isolator, on-board reference, ±250 mV analog input range, low power operation, -40°C to +125°C operating range, etc.
The AD7400A is a second‑order, 16‑bit sigma‑delta modulator that converts an analog input into a high‑speed 1‑bit data stream. It features an on‑chip digital isolator, reference, and operates from a 5 V supply with a typical power draw of 15.5 mA. The device supports a ±250 mV differential input range and a 10 MHz master clock output.
Designed for AC motor controls, shunt current monitoring, and data‑acquisition systems, the AD7400A meets safety standards such as UL 1577 (3750 Vrms isolation) and VDE certifications. It is offered in 8‑lead PDIP and 16‑lead SOIC packages and includes extensive insulation and temperature specifications for reliable operation in harsh environments.
| Clock Rate | 10 MHz |
|---|---|
| Resolution | 16 bits |
| Input Voltage Range | ±250 mV (full‑scale +320 mV) |
| Typical Power Consumption | 15.5 mA at 5.5 V |
| Operating Temperature Range | –40 °C to +125 °C |
The AD7400A accepts a differential input range of ±250 mV (full‑scale +320 mV).
Typical power consumption is 15.5 mA when powered at 5.5 V.
The device operates from –40 °C up to +125 °C.