Patent ID: 11874307
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 13:
14. The signal detection circuit according to claim 12, further comprising:
a first chopper circuit having two input terminals respectively connected to the third node and the fourth node, and two output terminals respectively connected to the non-inverting input terminal and the inverting input terminal; and
a second chopper circuit having two input terminals respectively connected to the inverting output terminal and the non-inverting output terminal, and two output terminals respectively connected to the first input terminal and the second input terminal of the comparator circuit,
wherein the first chopper circuit and the second chopper circuit are configured to enable the comparator circuit to compare the voltage of the inverting output terminal with the non-inverting output in a first interval within a predetermined number of the at least one cycle, and the first chopper circuit and the second chopper circuit are further configured to enable the comparator circuit to compare the voltage of the non-inverting output terminal with the voltage of the inverting output terminal in a second interval within the predetermined number of the at least one cycle.