DS3920T-002+T

快速电流镜电压钳位保护后续电路输出 Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry

The is a fast current mirror in 6 pin SOT-23 package. The 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 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 of 4.4mA typical 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. Typical applications include avalanche photodiode biasing, PIN photodiode monitoring and GEPON, GPON, 10GEPON, XGPON: ONU and OLT.

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Supply voltage range is 2.97V to 76V

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Operating temperature range from -40°C to 85°C

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Current monitor range from 250nA to 2mA

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5:1 mirror ratio

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Fast 50ns time constant

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Voltage clamp protects subsequent output circuitry