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Low distortion single-to-differential wide-band variable gain amplifier for optical communications
Low distortion single-to-differential wide-band variable gain amplifier for optical communications
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机译:低失真单/差分宽带可变增益放大器,用于光通信
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摘要
An amplifier, a circuit, and an optical communication system are provided. The disclosed amplifier may include a single-to-differential variable gain amplifier having a variable resistor switch that substantially always operates in a triode region at all time. Said another way, the resistor switch is configured to operate in a triode region regardless of whether or not a first portion of an input signal to the variable gain amplifier is larger than a second portion of the input signal. The disclosed scheme helps to keep the variable resistor switch in the triode region in all cases of operation, thereby maintaining the linearity condition and reducing distortion in the variable gain amplifier.
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