The AD1580 is a low-cost, 2-terminal (shunt), precision band gap reference. It provides an accurate 1.225 V output for input currents between 50 μA and 10 mA.
The AD1580 is a low‑cost, 2‑terminal shunt voltage reference that provides an accurate 1.225 V output for input currents between 50 µA and 10 mA. It is designed for portable, battery‑powered equipment such as cellular phones, notebook computers, GPS units, and industrial transmitters. The device is offered in SOT‑23 and SC70 surface‑mount packages and operates over an industrial temperature range of –40 °C to +85 °C.
The datasheet lists detailed specifications, typical performance curves, and application notes. Key features include an initial accuracy of ±0.1 %, temperature drift of 100 ppm/°C, output noise of 20 µV rms (10 Hz‑10 kHz), and a turn‑on settling time of 5 µs. Guidance is provided for applying the reference, handling capacitive loads, and integrating the part with 3 V data converters.