The ADR420/ADR421/ADR423/ADR425 series are high‑precision, low‑noise XFET® voltage reference devices offered by Analog Devices. They provide stable reference voltages of 2.048 V, 2.50 V, 3.00 V and 5.00 V with low temperature coefficients and excellent long‑term stability.
The devices are supplied in 8‑pin SOIC or 8‑pin MSOP packages, operate over a wide supply range (4 V‑18 V for ADR420, up to 7 V‑18 V for ADR425), and are suitable for precision data‑acquisition, medical instrumentation, fiber‑optic networking and industrial process control. This manual is written in Chinese.
| Output voltage (ADR420) | 2.048 V |
|---|---|
| Temperature coefficient (ADR420) | 0.05 ppm/°C (typical) |
| Supply voltage range (ADR420) | 4 V to 18 V |
| Static current (max) | 0.5 mA |
| Load regulation | 70 ppm/mA |
| Package options | 8‑pin SOIC or 8‑pin MSOP |
| Operating temperature range | –40 °C to +125 °C |
The ADR420 provides a 2.048 V reference output.
All devices in the series operate from –40 °C to +125 °C.
They are offered in 8‑pin SOIC and 8‑pin MSOP packages.