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:
Jul. 27, 2010
Filed:
Jul. 01, 2008
James E. Bartling, Chandler, AZ (US);
David L. Otten, Chandler, AZ (US);
D. C. Sessions, Phoenix, AZ (US);
James E. Bartling, Chandler, AZ (US);
David L. Otten, Chandler, AZ (US);
D. C. Sessions, Phoenix, AZ (US);
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
A high resolution digital-to-analog converter comprises a programmable n-bit current digital-to-analog converter (IDAC), an m-bit programmable counter/timer, an integrator that converts the IDAC constant current charging a capacitor over time into an a precision (high resolution) analog voltage, and a sample and hold circuit for storing the precision analog voltage. The constant current from the IDAC is applied to the integrator for a time period determined by the programmable counter/timer, then the sample and hold circuit will sample the final voltage on the capacitor and store it as an analog voltage. The analog voltage resolution of this high resolution digital-to-analog converter is n+m bits or binary 2. In addition, a plurality of sample and hold circuits may be utilized for maintaining a plurality of analog output voltages.