Key facts
- Brand
- Analog Devices
- Model
- AD420
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
Start here
Analog Devices AD420 Datasheet Rev H
The AD420 is a single‑chip digital‑to‑current‑loop converter designed for industrial control. It offers 16‑bit resolution, selectable current ranges (4‑20 mA, 0‑20 mA, 0‑24 mA) and a flexible 3.3 Mbps serial interface that can operate in 3‑wire or asynchronous mode.
The device is supplied in 24‑lead SOIC or PDIP packages, operates from 12 V to 32 V, and includes on‑chip reference, fault detection, and an optional external boost transistor for high‑temperature or high‑voltage applications.
Analog Devices AD420 specifications
| Resolution | 16 Bits |
|---|---|
| Current Output Ranges | 4‑20 mA, 0‑20 mA, 0‑24 mA |
| Power Supply Operating Range | 12 V – 32 V |
| Quiescent Current | 5.5 mA |
| Temperature Range | -40 °C – +85 °C |
| Settling Time (0.1 % FS) | 3 ms |
| Integral Nonlinearity | +0.012 % |
| Offset Error (at 25 °C) | +0.05 % |
| Total Output Error (20 mA or 24 mA, 25 °C) | +0.15 % |
| Data Input Rate (3‑Wire Mode) | Up to 3.3 Mbps |
All Analog Devices AD420 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What current output ranges does the AD420 support?
The AD420 can be programmed for 4 mA‑20 mA, 0 mA‑20 mA, or 0 mA‑24 mA output ranges.
What is the maximum supply voltage for the AD420?
The device operates with a supply voltage up to 32 V.
What is the maximum power‑supply voltage for the AD420?
The AD420 operates with a supply voltage up to 32 V.
How many bits of resolution does the AD420 provide?
The AD420 provides 16‑bit resolution.