The AD581 is a three-terminal, temperature compensated, monolithic bandgap voltage reference which provides a precise 10.00 volt output from an unregulated input level from 12 to 30 volts. Laser Wafer Trimming (LWT) is used to trim both the initial error at +25°C as well as the temperature coefficient, which results in high precision performance previously available only in expensive hybrids or oven-regulated modules. The 5 mV initial error tolerance and 5 ppm/°C guaranteed temperature coefficient of the AD581L represent the best performance combination available in a monolithic voltage reference.
The AD581 is a three‑terminal, laser‑trimmed, temperature‑compensated bandgap voltage reference that delivers a precise 10.000 V output from an unregulated 12‑30 V supply. It offers low quiescent current (≤1 mA), up to 10 mA output capability, and optional negative‑10 V operation with a single external resistor.
The document includes detailed electrical specifications, absolute maximum ratings, application circuits, and performance graphs such as temperature characteristics, turn‑on settling, and noise density. It also describes how to use the device as a current limiter or in high‑current reference configurations.
| Output voltage tolerance | ±5 mV |
|---|---|
| Temperature coefficient | 5 ppm/°C (typical) |
| Quiescent current | 1.0 mA max |
| Output current capability | 10 mA source, 5 mA sink |
| Long‑term stability | 25 ppm/1000 h |
| Noise (0.1 Hz to 10 Hz) | 40 nV p‑p |
The device draws up to 1.0 mA of quiescent current.
Yes, in a two‑terminal “Zener” mode the AD581 can provide a precision –10 V reference with a single external resistor.
The AD581L grade has a temperature coefficient of 5 ppm/°C over 0 °C to +70 °C.