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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.:

US 11239806 B1

PDFFull Text
Date of Patent:
Feb. 01, 2022

Filed:

Mar. 25, 2020

High stability gain structure and filter realization with less than 50 ppm/° c. temperature variation with ultra-low power consumption using switched-capacitor and sub-threshold biasing

Applicant:

Northeastern University, Boston, MA (US);

Inventor:

Aatmesh Shrivastava, Boston, MA (US);

Assignee:

Northeastern University, Boston, MA (US);

Attorneys:

Foley Hoag LLP

Dana M. Gordon

Rajesh Vallabh

Primary Examiner:

Hieu P Nguyen

Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 3/00 (2006.01); H03F 1/30 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45071 (2013.01); H03F 1/30 (2013.01); H03F 3/005 (2013.01); H03F 2200/267 (2013.01); H03F 2200/513 (2013.01);
Abstract

An ultra-low power sub-threshold gstage is disclosed where transconductance is very stable with process, temperature, and voltage variations. This technique can be implemented in a differential amplifier with constant gain and a second order biquad filter with constant cut off frequency. The amplifier gain can achieve a small temperature coefficient of 48.6 ppm/° C. and exhibits small sigma of 75 mdB with process. The second order biquad can achieve temperature stability of 69 ppm/° C. and a voltage coefficient of only 49 ppm/mV.

Find Patent Forward Citations

Shrivastava, Aatmesh. (2022). High stability gain structure and filter realization with less than 50 ppm/° c. temperature variation with ultra-low power consumption using switched-capacitor and sub-threshold biasing (U.S. Patent No. 11239806). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11239806

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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