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:
Mar. 24, 1998
Filed:
Aug. 19, 1996
Josef-Matthias Gantioler, Munchen, DE;
Holger Heil, Munchen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A comparator circuit includes a series circuit having a first MOSFET and a second MOSFET. An inverter has a third MOSFET and a fourth MOSFET. A node between the first and second MOSFETs is connected to a gate terminal of the fourth MOSFET. An input voltage is applied between ground and the second MOSFET. A series circuit of a fifth MOSFET and a Zener diode polarized in the blocking direction is connected parallel to the fourth MOSFET. A response threshold of the comparator circuit is defined by adjusting a resistance of the Zener diode occurring in the reverse direction. The resistance is adjusted through the use of a voltage pulse that can be applied to a terminal connected to a cathode of the Zener diode.