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:
Aug. 21, 2012
Filed:
Jul. 29, 2010
Otilia Neagoe, Bucharest, RO;
Radu H. Iacob, Santa Clara, CA (US);
Otilia Neagoe, Bucharest, RO;
Radu H. Iacob, Santa Clara, CA (US);
Semiconductor Components Industries, LLC, Phoenix, AZ (US);
Abstract
A potentiometer and a method for adjusting an impedance. In accordance with an embodiment, the potentiometer may be a programmable multistage digital potentiometer that has a first stage comprising a non-shunted impedance, a second stage coupled between a reference terminal and the first stage, and a third stage coupled between the first stage and another reference terminal. In accordance with another embodiment, the potentiometer receives a wiper address and parses it into sections such that one section controls the first stage, a second portion controls portions of the second and third stages, and a third portion controls the other portions of the second and third stages to produce a desired impedance between a common wiper terminal and the reference terminals.