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. 04, 2003
Filed:
Sep. 29, 2000
Hartono Darmawaskita, Chandler, AZ (US);
Layton Eagar, Mesa, AZ (US);
Miguel Moreno, Gilbert, AZ (US);
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
Input offset voltage calibration of an analog device, or plurality of analog devices, is controlled by a microcontroller. The microcontroller and analog device(s) are fabricated on an integrated circuit die or in a multi-chip package. The microcontroller applies a digital word to an input offset voltage compensation circuit of the analog device for generating input offset voltage compensation. The analog device is switched to a calibrate mode and a voltage comparator compares the output of the analog input device and a voltage reference. When the output of the analog input device is equal to or greater than the voltage reference, the comparator output signals the microcontroller by changing its output logic level. The input offset voltage compensation circuit of the analog input device has a storage register or memory that retains the digital word which compensates for the input offset voltage.