The AD589 is a 2-terminal, low cost, temperature compensated band gap voltage reference that provides a fixed 1.23 V output voltage for input currents between 50 μA and 5.0 mA.
The AD589 is a 2‑terminal, temperature‑compensated band‑gap voltage reference that delivers a fixed 1.23 V output over a wide input‑current range (50 µA‑5 mA). It is available in metal‑can and SOIC packages and in several temperature‑grade versions.
The device features low output impedance (0.6 Ω), low RMS noise (≈5 µV), and fast turn‑on settling (≈25 µs). It can be used directly as a reference for ADCs, DACs, or as a building block for higher‑voltage references.
| Temperature coefficient | 10 ppm/°C |
|---|---|
| Dynamic output impedance | 0.6 Ω |
The device has a temperature coefficient of 10 ppm/°C.
At 50 µA the total power dissipation is about 60 µW.
Yes, it operates with no external components required to maintain full accuracy.