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:
May. 19, 2015
Filed:
Jan. 21, 2015
Iq-analog Corporation, San Diego, CA (US);
Mikko Waltari, Escondido, CA (US);
Costantino Pala, San Diego, CA (US);
IQ—Analog Corporation, San Diego, CA (US);
Abstract
A system and method are provided for measuring current sources, such as might be useful in the calibration of a digital-to-analog converter (DAC). The method provides a first plurality of current sources. Each current source is engageable to supply a current representing a corresponding nominal value. The method selectively enables current source combinations of current. In response to measuring the current source combinations, current difference values are found, and the current source nominal values are adjusted using the current difference values. In one aspect, a reference current source is provided having a reference first value, and the current source nominal values are adjusted with respect to the reference first value. The current sources may have corresponding nominal digital values adjusted using measured digital difference values.