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:
Mar. 25, 2014
Filed:
Sep. 21, 2012
Applicant:
Invensense, Inc., Sunnyvale, CA (US);
Inventors:
Stanley Bo-Ting Wang, Cupertino, CA (US);
Derek K. Shaeffer, Redwood City, CA (US);
Assignee:
Invensense, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An embodiment of the invention includes an analog to digital converter including a sigma delta modulator that generates a feedback signal. The sigma delta modulator includes a quantizer responsive to an input signal and the feedback signal and generates a quantizer output. The sigma delta modulator further includes a chopper-stabilized amplifier that provides a reference signal to the sigma delta modulator, and the chopper-stabilized amplifier is stabilized according to a combination of a chopping signal and the quantizer output.