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US 2022/0019302 A1Published application
Capacitance sensing circuit
AssigneeSensortek Technology Corp.
InventorsTUN-JU WANG, CHING-JEN TUNG, CHI-HUAN LU, CHUN-YU LIN, YEN-SHAO LIN
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Abstract
The application relates to a capacitance sensing circuit, which samples and holds a reference signal to generate an input reference signal, hereby, an input signal is generated to a sensing circuit. Thereby, the sensing circuit generates an output signal according to the input signal and a sensing signal, for the capacitance sensing.
Claims8
A capacitance sensing circuit, comprising:
- a sample-hold circuit, sampling and holding a reference signal to generate an input reference signal;
- a signal generating circuit, generating an input signal according to the input reference signal;
- and
- a sensing circuit, generating an output signal according to the input signal and a sensing signal.
1 more element
Dependencies are inferred from the claim text.