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. 01, 2000
Filed:
Mar. 19, 1998
Applicant:
Inventors:
James B Nolan, Chandler, AZ (US);
Hartono Darmawaskita, Chandler, AZ (US);
R Scott Ellison, Phoenix, AZ (US);
David Susak, Phoenix, AZ (US);
Assignee:
Microchip Technology Inc., Chandler, AZ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03L / ;
U.S. Cl.
CPC ...
331111 ; 331143 ; 331176 ;
Abstract
A precision relaxation oscillator with temperature compensation produces a stable clock frequency over wide variations of ambient temperature. The invention has a oscillation generator and two independent current generators. The outputs of the two programmable, independent current generators are combined to provide a capacitor charging current which is independent of temperature. The precision relaxation oscillator with temperature compensation is implemented on a single, monolithic integrated circuit.