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:
Feb. 14, 1995
Filed:
Apr. 21, 1993
Richard A Erhart, Chandler, MN (US);
Matthew P Hanly, Scottsdale, AZ (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A system and method minimizing switching errors in voltages delivered to a resistive load. Switch impedances can be significant when small resistor values are utilized. A system relies on varying the resistance in the switches to compensate for the output voltage errors. The selection of a particular CMOS input transmission gate depends upon which outputs of a resistor divider are selected. In concept, a system is created which replaces each input transmission gate with a resistor and a zero impedance switch. The combination of properly selected CMOS input transmission gates results in output offset voltage errors which are greatly reduced due to the matching impedances of the individual switches.