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:
Oct. 18, 2011
Filed:
Mar. 23, 2010
Ravindar Mohan Lall, Portland, OR (US);
Ravindar Mohan Lall, Portland, OR (US);
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Abstract
In one example, a comparator circuit includes a differential stage adapted to receive a differential input signal. The comparator circuit includes first and second diodes coupled to the differential stage. The first and second diodes are adapted to selectively switch on and off to provide a differential output signal at first and second differential output nodes in response to the differential input signal. The comparator circuit includes a current steering circuit adapted to selectively provide a reference current from a current source to the first or second diode in an off state to reduce a voltage swing of the first or second diode between the off state and an on state. The comparator circuit includes an output stage coupled to the first and second diodes at the first and second differential output nodes. The output stage is adapted to convert the differential output signal to a single ended output signal.