The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2024
Filed:
Apr. 17, 2023
Cypress Semiconductor Corporation, San Jose, CA (US);
Andriy Maharyta, Lviv, UA;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
Apparatuses and methods of capacitance-to-digital code conversion are described. One apparatus includes a bridge circuit and a modulator front-end circuit. The bridge circuit includes a first terminal to couple to a reference cell and a second terminal to couple to a sensor cell. The modulator front-end circuit includes a comparator coupled to the bridge circuit, a first modulation capacitor coupled to a first input of the comparator, and a second modulation capacitor coupled to a second input of the comparator. The modulator front-end circuit provides a digital bitstream. A duty cycle of the digital bitstream is representative of a ratio between a capacitance of the sensor cell and a reference capacitance of the reference cell.