The AD7401A is a second-order Σ-Δ converter with a digital isolator, a conversion rate of 20 MHz, 16-bit accuracy and no missing codes. The operating voltage range of the AD7401A is 2.7 V to 5.5 V, and the operating temperature range is -40°C to +125°C. The AD7401A is packaged in a 16-lead SOIC package.
The AD7401A is a second‑order sigma‑delta modulator that converts an analog input into a high‑speed 1‑bit data stream. It operates from a 5 V supply, provides on‑chip digital isolation, and includes an internal reference. The device is offered in a 16‑lead SOIC package and is rated for –40 °C to +125 °C.
Key features include a 20 MHz maximum external clock rate, 16‑bit resolution with no missing codes, ±250 mV input range, and reinforced isolation up to 5000 V rms for 1 minute. The datasheet provides detailed specifications, timing diagrams, safety ratings, and ordering information.
| Resolution | 16 Bits |
|---|---|
| Maximum external clock rate | 20 MHz |
| Input voltage range | ±250 mV (full scale ±320 mV) |
| Power consumption | 17 mA typical at 5.5 V |
| Isolation voltage | 5000 V rms for 1 minute (UL 1577) |
| Operating temperature range | –40 °C to +125 °C |
The AD7401A supports up to a 20 MHz external clock rate.
It is rated for 5000 V rms isolation for 1 minute according to UL 1577.
Typical power consumption is 17 mA at a 5.5 V supply.