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. 14, 2009
Filed:
Sep. 18, 2006
Milam Paraschou, Eden Prairie, MN (US);
Robert L. Rabe, Chanhassen, MN (US);
Milam Paraschou, Eden Prairie, MN (US);
Robert L. Rabe, Chanhassen, MN (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
A peak voltage detector is used to detect the absolute value of the peak differential amplitude of a differential input signal. The peak voltage detector includes a differential amplifier receiving the differential input signal and generating a corresponding pair of differential output signals. The voltage detector also includes a capacitor on which an output signal is generated. A first differential comparator generates a first signal whenever the differential voltage from the differential amplifier is greater than the voltage of the output signal. A second differential comparator generates a second signal whenever the negative of the differential voltage from the differential amplifier is greater than the voltage of the output signal. A current source applies current to the capacitor responsive to receiving either the first or second signal. The amplitude of the feedback voltage is thus equal to the absolute value of the peak differential amplitude of the input signal.