| 摘要 |
A light receiving device includes: an automatic boundary point controller outputting a reference voltage; an on-chip regulator generating, from an external voltage, an on-chip voltage lower than the external voltage; a pre-amplifier operating in a single mode, receiving a current signal from a photo detector, receiving the on-chip voltage from the on-chip regulator to convert and amplify the current signal into a voltage signal, and outputting the voltage signal having minimized power supply voltage noise; and a noise cancellation block receiving a reference voltage output by the automatic boundary point controller and a common mode voltage output by the pre-amplifier and adding said received voltages to the on-chip voltage for outputting to the pre-amplifier. |
