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:
May. 10, 1994
Filed:
Apr. 13, 1992
Marcellinus J Pelgrom, Eindhoven, NL;
Antonia C Van Rens, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A clocked comparator circuit comprises an input stage and a sample-and-hold circuit and an amplifier-latch circuit coupled to the output of the input stage. The sample-and-hold circuit provides an accurate offset-voltage compensation and the amplifier-latch circuit provides a high operating speed by means of a switchable current source (S6, T11). Switches are provided so that the amplifier-latch circuit constitutes a differential load having a high positive impedance during a first state of a clock signal, a low positive impedance during a next state of the clock signal, and a negative impedance during a following state of the clock signal.