Patent ID: 6232618
Filing Date: 2001-05-15
Classification: G01K

Abstract:
A sensor comprising a temperature-dependent measuring resistor connected by a connection contact to an evaluation circuit and flowed through by an impressed current, wherein a voltage signal falling across the measuring resistor is determined, said voltage signal relating to the temperature of the measuring resistor in an at least approximately linear proportion, wherein the measuring resistor (1) is electrically connected at one end (2) both with a constant current source and with an electrical circuit for outputting a temperature-voltage signal, a connection point (26) of a series connection composed of the measuring resistor (1) and a reference resistor (7) being connected to the electrical circuit, wherein the temperature-dependent measuring resistor (1) and the reference resistor (7) are each arranged as discrete structural components on a substrate (33) having an electrically insulating surface, and wherein connection-contact banks (2, 3) for the measuring resistor (1) and connection contact banks (5, 6) for the reference resistor (7) are each connected via strip conductors or wire connections to the elevation circuit also arranged on the substrate (33) in a micro-module (34), wherein the micro-module (34) is constructed in silicon technology, and the sensor operates at temperatures up to about 300.degree. C.