光电转换电路大全

　　 光电转换电路大全 　　 OPTOELECTRONICS CIRCUIT COLLECtiON By Neil Albaugh The following collection of analog circuits may be useful in electro-optics applications such as optical networking systems. This page summarizes their salient characteristics. Similar to the previous circuit except that it operates from ±5V supplies and it is inverting; i.e., drives from 0A to 2A into a laser diode with a 0V to –2V input. A very low noise bipolar input op amp allows this circuit to achieve a low noise output current, an important consideration in dense channel spacing systems. As drawn, neither terminal of the laser diode is grounded. TEMPERATURE UNDER–AND OVER–RANGE SENSING WITH A WINDOW COMPARATOR This circuit is useful to monitor the temperature of a TEC thermistor, to sense an out-of-range condition, or if the thermistor is shorted or open. Current sources make the threshold adjustments non-iterative. The supply voltage is +5V.

 

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