DS3920 - 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 is also provided to limit the voltage at the current mirror .

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 or 20mA, typ) S Voltage Clamp Protects Subsequent Output Circuitry S 6-Pin SOT23 (MAX4007 Compatible) Features S Wide Voltage Input Range: 2.97V to 76V Applications Avalanche Photodiode (APD) Biasing PIN Photodiode Monitoring GEPON, GPON, 10GEPON, XGPON: ONU and OLT Ordering Information appears at end of d.