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:
Jul. 21, 2020
Filed:
Nov. 02, 2017
Analog Devices, Inc., Norwood, MA (US);
Hongxing Li, Andover, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Comparator input noise or offset suppression can include an error detector circuit that can operate in a feedback loop, such as during an autozero phase. The error detector circuit can include a time-varying filter response to improve accuracy and convergence time. The comparator can be used in a successive approximation routine (SAR) or other analog-to-digital converter (ADC) circuit, such as to control a digital-to-analog converter (DAC), such as can be used to adjust a tuning circuit within the comparator to compensate for noise or offset. The DAC can be combined with a DAC used for carrying out SAR bit-trials or bit decisions.