Patent ID: 11881865
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A switching circuit, comprising:
a first switching unit electrically coupled to a first current source through a negative terminal of a frequency generation circuit, electrically coupled to a first impedance circuit through a first impedance node, and electrically coupled to a second impedance circuit through a second impedance node, wherein the first switching unit is configured to periodically conduct the negative terminal to one of the first impedance node and the second impedance node; and
a second switching unit electrically coupled to a second current source through a positive terminal of the frequency generation circuit, electrically coupled to the first impedance circuit through the first impedance node, and electrically coupled to the second impedance circuit through the second impedance node, wherein the second switching unit is configured to periodically conduct the positive terminal to the other one of the first impedance node and the second impedance node, wherein the first impedance node and the second impedance node are electrically isolated in a switching operation of the switching circuit;
wherein the switching operation of the switching circuit and a switching operation of a chopper operational amplifier in the frequency generation circuit are performed simultaneously.