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DS3920

Maxim Integrated Products
Part Number DS3920
Manufacturer Maxim Integrated Products
Description Fast Current Mirror
Published May 25, 2011
Detailed Description 19-5797; Rev 0; 3/11 DS3920 Fast Current Mirror General Description The DS3920 precision current mirror is designed for...
Datasheet PDF File DS3920 PDF File

DS3920
DS3920

Overview
19-5797; Rev 0; 3/11 DS3920 Fast Current Mirror General Description 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 is also provided to limit the voltage at the current mirror output.
The device accepts a +2.
97V to +76V current mirror supply voltage.
Internal current limiting (2.
9mA or 20mA, typ) protects the monitored device from a short circuit to ground.
The provided internal clamp diode protects the current mirror output from overvoltage.
Additionally, the device 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 ...


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