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. 24, 2000
Filed:
May. 28, 1999
Richard A Alderman, Freeport, IL (US);
S Todd Sanders, Freeport, IL (US);
Honeywell International Inc, Morrsitown, NJ (US);
Abstract
An interface circuit for interfacing a data bus with a current sinking sensor or a current sourcing sensor. An input terminal is connected between a cathode of a first diode and an anode of a second diode. The anode of the first diode is connected to a first input terminal of a comparator, such as a differential amplifier. The cathode of the second diode is connected to a second input of the comparator. Two pairs of in-series resistors are connected between a voltage supply. The anode of the first diode is connected between two resistors of the first pair of resistors. The cathode of the second diode is connected between two resistors of the other pair of resistors. An output of the comparator is connected to an output terminal. The interface circuit of this invention can be connected between an input circuit and an output circuit, to interface a sensor parameter and the corresponding input current or signal to the data bus and a corresponding output current or signal.