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:
Nov. 19, 1985
Filed:
Jul. 01, 1983
Robert C Rumbaugh, Phoenix, AZ (US);
Ira Miller, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A self latching comparator circuit has upper and lower input offset voltages associated therewith to establish hysteresis in response to a differential input signal. The comparator circuit comprises a differential amplifier adapted to receive a differential input signal and first and second parallel current mirror circuits for producing upper and lower input offset voltages when each are respectively activated. Antisaturation means are provided for preventing the current mirror circuits from saturating. An output circuit is also provided which does not load the differential output and therefore provides for a well controlled hysteresis.