Features and Benefits
- Wide Voltage Input Range: 2.97V to 76V
- Current Monitor
- Wide 250nA to 2mA Range
- 5:1 Mirror Ratio
- Fast 50ns Time Constant
- Current Clamp (4.4mA or 20mA, typ)
- Voltage Clamp Protects Subsequent Output Circuitry
- 6-Pin SOT23 (MAX4007 Compatible)
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 (4.4mA 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 +150°C.
The device is available in a 6-pin SOT23 package, and operates over the -40°C to +85°C extended temperature range.
- Avalanche Photodiode (APD) Biasing
- GEPON, GPON, 10GEPON, XGPON: ONU and OLT
- PIN Photodiode Monitoring
Product Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
DS3920 Reliability Data1/12/2023
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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