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DS3920 Fast Current Mirror

DS3920 Description

19-5797; Rev 0; 3/11 DS3920 Fast Current Mirror General .
The DS3920 precision current mirror is designed for avalanche photodiode (APD) and PIN photodiode biasing and monitoring applications.

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

DS3920 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 is also provided to limit the voltage at the current mirror output. The device accepts a +2.97V to +76V current mirror supply voltage.

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