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:
Jun. 02, 2020
Filed:
Jul. 30, 2018
Analog Devices Global Unlimited Company, Hamilton, BM;
Gaurav Gupta, Bangalore, IN;
Arthur J. Kalb, Santa Clara, CA (US);
Analog Devices Global Unlimited Company, Hamilton, BM;
Abstract
Techniques to generate two separate temperature independent reference voltages. The reference voltages can be generated using a chain of ΔVcells. A cross-quad ΔV-cell-based bandgap voltage reference can cancel out noise of associated current sources by forcing them to correlate. Several ΔVstages can be cascaded together to generate an appreciable PTAT component that can cancel the CTAT component from V. In some example configurations, only BJTs are used—without requiring use of an amplifier—to generate the bandgap voltages; in this way, extremely low noise voltage references can be generated. The PTAT and the CTAT voltages can be combined to generate a bandgap voltage of approximately Vor approximately 2V.