Invention Grant
- Patent Title: Apparatuses and methods for electrical current sensing
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Application No.: US17587109Application Date: 2022-01-28
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Publication No.: US11668767B2Publication Date: 2023-06-06
- Inventor: Mario Motz , Qinwen Fan , Amirhossein Jouyaeian , Kofi Makinwa
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Harrity & Harrity, LLP
- Priority: DE 2021102051.4 2021.01.29
- Main IPC: G01R33/00
- IPC: G01R33/00 ; G01R15/18 ; H03F3/45 ; G01R15/20 ; G01R33/07 ; G01R19/32

Abstract:
The present disclosure relates to a magnetic field sensor circuit including at least one coil for measuring a magnetic field, a first stage amplifier circuit coupled to the coil and having a first transfer function with a pole at a first frequency, and a second stage amplifier circuit coupled to an output of the first stage amplifier circuit and having a second transfer function with a zero at the first frequency. In some embodiments, a temperature dependent frequency drift of the pole of the first transfer function corresponds to a temperature dependent frequency drift of the zero of the second transfer function.
Public/Granted literature
- US20220244322A1 APPARATUSES AND METHODS FOR ELECTRICAL CURRENT SENSING Public/Granted day:2022-08-04
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