Invention Grant
- Patent Title: Chop tone management for a current sensor or a voltage sensor
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Application No.: US17173813Application Date: 2021-02-11
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Publication No.: US11652455B2Publication Date: 2023-05-16
- Inventor: Ravi K. Kummaraguntla , Christophe J. Amadi , John L. Melanson , Axel Thomsen , John C. Tucker , Eric J. King
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: GB Edinburgh
- Assignee: Cirrus Logic, Inc.
- Current Assignee: Cirrus Logic, Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03F3/387
- IPC: H03F3/387 ; G01R31/3842 ; G01R31/40 ; H03F3/181

Abstract:
A signal processing system may include a signal path and a chop management circuit. The signal path may comprise a chopper configured to chop a differential input signal to the signal path at a chopping frequency and a low-pass filter downstream of the chopper and configured to filter out intermodulation products of a direct current offset of the signal path and intermodulation products of an aggressor on the differential input signal in order to generate an output signal. The chop management circuit may be communicatively coupled to the chopper and configured to, based on operational parameters associated with the signal path, dynamically manage energy of one or more clock signals used to define the chopping frequency.
Public/Granted literature
- US20220255515A1 CHOP TONE MANAGEMENT FOR A CURRENT SENSOR OR A VOLTAGE SENSOR Public/Granted day:2022-08-11
Information query
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