CONTROLLING OVERLOAD OF A TRANSIMPEDANCE AMPLIFIER IN AN OPTICAL TRANSCEIVER

摘要

Briefly, in accordance with one or more embodiments, a transimpedance amplifier of an optical transceiver or the like has a feedback element in a feedback arrangement and is capable of receiving an electrical current from an optical-to-electrical converter to generate an output voltage in response to the electrical current. A control circuit coupled to the feedback element is capable of providing a control signal to control a bias current of the transimpedance amplifier to maintain DC current flowing through the feedback element at or near zero by changing the bias current in response to the control circuit detecting a non-zero DC current flowing through the feedback element.