DS3920 Overview
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.
DS3920 Key Features
- 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-Pi