Provides Optimized APD Bias and Mirror for PON Applications
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.
Key Features
| Applications/Uses
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| title | Download file |
|---|---|
| DS3920 Data Sheet | DS3920.pdf |
| Part Number | Photo Diode Appl. | IDIODE | IDIODE | VBIAS (V) | Package/Pins | Oper. Temp. (°C) | Budgetary Price |
|---|---|---|---|---|---|---|---|
| min | max | max | See Notes | ||||
| DS3920 | APD | 10µA | 4mA | 76 | SOT/6 | -40 to +85 | $0.60 @1k |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| DS3920T-001+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
| DS3920T-001+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
| DS3920T-002+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
| DS3920T-002+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free |