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:
Jan. 04, 2011
Filed:
Mar. 26, 2008
Thomas D. Cook, Austin, TX (US);
Tahmina Akhter, Austin, TX (US);
Jeffrey C. Cunningham, Austin, TX (US);
Thomas D. Cook, Austin, TX (US);
Tahmina Akhter, Austin, TX (US);
Jeffrey C. Cunningham, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A reference voltage regulation circuit () is provided in which one or more input voltage signals (Vref, Vref') are selectively coupled to a configurable amplifier () which is coupled through a sample and hold circuit () to a voltage follower circuit () which is coupled in feedback to the configurable amplifier () for generating an adjusted output voltage at a circuit output (), where the voltage follow circuit comprises a resistor divider circuit () that is controlled by a calibration signal (Cal<n:0>) generated by a counter circuit () selectively coupled to the output of the configurable amplifier when configured as a comparator for generating the calibration signal in response to a clock signal, where the calibration signal represents a voltage error component (Verror, Voffset) that is removed from the circuit output when the calibration signal is applied to the resistor divider circuit during normal operational.