Invention Grant
- Patent Title: Capacitance measurement
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Application No.: US14866036Application Date: 2015-09-25
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Publication No.: US09939476B2Publication Date: 2018-04-10
- Inventor: Christian Steffen Birk , John A. Cleary , David Sayago Montilla , Elizabeth A. Lillis , Padraig O'Connor , Eoin E. English , Patrick Pratt , Kathleen Embrechts , Wim Rens , Jan Crols
- Applicant: ANALOG DEVICES GLOBAL
- Applicant Address: BM Hamilton
- Assignee: ANALOG DEVICES GLOBAL
- Current Assignee: ANALOG DEVICES GLOBAL
- Current Assignee Address: BM Hamilton
- Agency: Patent Capital Group
- Main IPC: G01R27/26
- IPC: G01R27/26 ; B81C99/00

Abstract:
Embodiments of the present invention may provide a method of measuring an unknown capacitance of a device. The method may comprise the steps of driving a test signal to a circuit system that includes a current divider formed by the device with unknown capacitance and a reference capacitor; mirroring a current developed in the reference capacitor to a second circuit system that includes a measurement impedance; measuring a voltage within the second circuit system; and deriving a capacitance of the unknown capacitance based on the measured voltage with reference to a capacitance of the reference capacitor and the measurement impedance.
Public/Granted literature
- US20170089966A1 CAPACITANCE MEASUREMENT Public/Granted day:2017-03-30
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