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:
Sep. 10, 2002
Filed:
Sep. 25, 2000
Ka Y. Leung, Austin, TX (US);
Cygnal Integrated Products, Inc., Austin, TX (US);
Abstract
In a segmented DAC having dual main DAC resistor strings and dual sub-DAC resistor strings, an interpolation circuit for averaging the selected voltage from each sub-DAC resistor string. A first switch multiplexer selects a voltage from the first sub-DAC resistor string, and a second switch multiplexer selects a similar voltage from a second sub-DAC resistor string. The selected analog voltages are coupled to high impedance inputs of a differential averaging circuit. An output voltage is fed back to the differential circuit. Once the differential averaging circuit settles, a quiescent feedback voltage exists which is exactly between the two analog voltages to be interpolated. The non-linearity of the DAC is substantially reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile