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:
Jan. 20, 2009
Filed:
Sep. 26, 2007
Michael W. Heinks, New Brighton, MN (US);
Joel A. Anderson, Brooklyn Park, MN (US);
Wenxiao Tan, Murphy, TX (US);
Michael W. Heinks, New Brighton, MN (US);
Joel A. Anderson, Brooklyn Park, MN (US);
Wenxiao Tan, Murphy, TX (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
In general, this disclosure describes techniques for capacitive digit-to-analog converter (CAPDAC) resetting in an implantable medical device (IMD) analog-to-digital converter (ADC). The CAPDAC of an IMD ADC may occasionally be reset to increase the accuracy of its output. The output of the CAPDAC may be disconnected from a negative feedback input of an integrator and connected to a pseudo load during the reset. Disconnecting the CAPDAC from the negative feedback input of the integrator reduces the affect of the reset on the integrator. During the reset of the CAPDAC, the negative feedback input of integrator is coupled to a sample and hold capacitor, which temporarily provides an input approximately equal to a previous, e.g., immediate, value of the output of CAPDAC prior to the reset. Thus, the resetting of the CAPDAC is done in such a manner that the affect of the reset on integrator is substantially reduced or eliminated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile