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. 08, 2014
Filed:
Mar. 16, 2011
Brian Williams, Melbourne, FL (US);
Brian Williams, Melbourne, FL (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
Embodiments of the present invention are related to circuits and methods for generating a reference current (Idc). In an embodiment, a voltage-to-current converter circuit is used to generate the reference current (Idc) in dependence on a reference voltage (Vref) and a precision resistor (R), wherein Idc=Vref/R. A capacitor (C) is used to shunt noise that couples into the voltage-to-current converter. A frequency dependent feedback network is used to compensate for instabilities introduced by the capacitor (C). The capacitor (C) can be used to shunt noise that couples into the voltage-to-current converter by connecting the capacitor (C) in parallel with the precision resistor (R). The frequency dependent feedback network can be used to compensate for instabilities introduced by the capacitor (C) by connecting the frequency dependent feedback network between a feedback terminal of an amplifier of the voltage-to-current converter circuit and a terminal of the capacitor (C).