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:
Aug. 31, 1999
Filed:
Mar. 31, 1998
Applicant:
Inventor:
Jeannie Han Kosiec, Schaumburg, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327 68 ; 327 77 ; 327205 ;
Abstract
A comparator circuit (100) produces a binary output voltage at an output (109) in response to a time varying input signal received at an input (108). The comparator circuit includes an output circuit (106) having a first current mirror (202), a second current mirror (204), a bias circuit (206) and a helping current source (208). Bias currents are applied in response to the state of the output voltage at the output to increase the gain and the hysteresis of the output circuit.