Patent ID: 11936354
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An amplifier circuit having a first output terminal and a second output terminal, comprising:
a first transistor having a first terminal, a second terminal, and a first control terminal, the second terminal being coupled to the first output terminal;
a second transistor having a third terminal, a fourth terminal, and a second control terminal, the fourth terminal being coupled to the second output terminal;
a third transistor having a fifth terminal, a sixth terminal, and a third control terminal, the sixth terminal being coupled to the first terminal, and the third control terminal receiving a first input signal;
a fourth transistor having a seventh terminal, an eighth terminal, and a fourth control terminal, the seventh terminal being coupled to the fifth terminal, the eighth terminal being coupled to the third terminal, and the fourth control terminal receiving a second input signal;
a first switch having a ninth terminal and a tenth terminal, the ninth terminal being coupled to a first reference voltage, and the tenth terminal being coupled to the first output terminal;
a second switch having an eleventh terminal and a twelfth terminal, the eleventh terminal being coupled to the first reference voltage, and the twelfth terminal being coupled to the second output terminal;
a third switch having a thirteenth terminal and a fourteenth terminal, the thirteenth terminal being coupled to the first reference voltage, and the fourteenth terminal being coupled to the first terminal and the sixth terminal;
a fourth switch having a fifteenth terminal and a sixteenth terminal, the fifteenth terminal being coupled to the first reference voltage, and the sixteenth terminal being coupled to the third terminal and the eighth terminal; and
a fifth switch having a seventeenth terminal and an eighteenth terminal, the seventeenth terminal being coupled to a second reference voltage, and the eighteenth terminal being coupled to the fifth terminal and the seventh terminal;
wherein the first transistor and the second transistor function as a common-source amplifier.