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:
Apr. 26, 2022
Filed:
Apr. 24, 2019
International Business Machines Corporation, Armonk, NY (US);
Chitra Subramanian, Putnam, NY (US);
Sufi Zafar, Briarcliff Manor, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
An integrated chemical sensor device includes a chemical sensor comprising at least one transistor and having an external sensing surface electrically coupled to a node of the at least one transistor. There is an initialization circuit connected to the base of the at least one transistor configured to set an operating point for the at least one transistor. There is a temperature sensor control circuit coupled to the chemical sensor circuit. The temperature sensor includes a temperature sensor, an analog-to-digital (A/D) converter coupled to the temperature sensor, and a proportional-to-absolute-temperature (PTAT) circuit configured to generate a PTAT reference voltage for temperature compensation. The temperature sensor control circuit is configured to compensate for a change in temperature of the at least one transistor.