DS3920 Datasheet (Maxim Integrated Products)

DS3920, Fast Current Mirror

The DS3920 precision current mirror is designed for avalanche photodiode (APD) and PIN photodiode biasing and monitoring applications.

The device offers a current clamp to limit current through the APD and a current mirror output that produces a signal proportional (5:1) to the APD current.

A diode

DS3920 Features

* thermal shutdown if the die temperature reaches +150NC. The device is available in a 6-pin SOT23 package, and operates over the -40NC to +85NC extended temperature range. S Current Monitor

* Wide 250nA to 2mA Range

* 5:1 Mirror Ratio

* Fast 50ns Time Constant S Current Clamp (2.9mA