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:
Dec. 25, 2018
Filed:
Oct. 10, 2017
Microchip Technology Incorporated, Chandler, AZ (US);
Dan Meacham, Del Mar, CA (US);
MICROCHIP TECHNOLOGY INCORPORATED, Chandler, AZ (US);
Abstract
A bootstrapped sampling switch may be used at lower supply voltages due to its high linearity, wherein the sampled voltage may be substantially higher than the supply voltage. A 2.7 volt or lower DC supply may be used with this sampling switch to sample a much higher voltage. A plurality of these high voltage transmission gate switches may be connected directly together, thereby removing a primary source of channel-to-channel mismatch (the active buffer/voltage reduction circuit) and enables new methods of error compensation not previously possible. The sampling switch circuit does not consume DC current from what is being measured. There may be a small switched capacitor voltage charge and there may be some voltage leakage, but no DC current is drawn from the voltage input being measured.