Signal amplifying circuit with reduced output signal noise by introducing coupling effect and related method thereof

摘要

A signal amplifying circuit includes: an input stage circuit, arranged to receive an input signal; a first inductive device coupled between the input stage circuit and a first reference voltage; an output stage circuit arranged to generate an output signal according to the input signal; and a second inductive device coupled between the output stage circuit and a second reference voltage, wherein at least a part of a winding of the first inductive element is cross-coupled to at least a part of a winding of the second inductive element.

主权项

1. A signal amplifying circuit, comprising:
an input stage circuit, arranged for receiving an input signal; a first inductive element, coupled between the input stage circuit and a first reference voltage, for receiving the input signal; an output stage circuit, arranged for generating an output signal according to the input signal; and a second inductive element, coupled between the output stage and a second reference voltage; wherein at least a part of the winding of the first inductive element is cross-coupled to at least a part of the winding of the second inductive element.