Patent ID: 11901870
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The amplifier of claim 16, wherein the first current source further comprises a first variable resistor, the first variable resistor is coupled to an input terminal of the first current mirror, the second current source further comprises a second variable resistor, the second variable resistor is coupled to an input terminal of the second current mirror;
the gain adjusting circuit is coupled to the first variable resistor and the second variable resistor and is configured to decrease the resistance of the first variable resistor and the resistance of the second variable resistor by outputting a plurality of second control signals to the first variable resistor and the second variable resistor, and the first current provided by the first current mirror and the second current provided by the second current mirror are increased to increase the first bias current provided by the first current source and the second bias current provided by the second current source so as to increase the real gain of the amplifier circuit.