Patent ID: 7662341

Claim:
A sensor arrangement having a plurality of sensor devices formed at least one of on or in a substrate, each of the sensor devices having: an electrical signal converter; a sensor element coupled to the signal converter, in which the sensor element can be used to characteristically influence the electrical conductivity of the signal converter on account of a sensor event on the sensor element; a device for keeping constant an electrical voltage present at the signal converter; and a device for detecting the value of the electric current flowing through the signal converter as a sensor signal, wherein the electrical signal converter is a field-effect transistor having a gate terminal coupled to the sensor element, the device for keeping constant an electrical voltage keeps constant the electrical voltage between source and drain terminals of the field-effect transistor; and the sensor arrangement further comprises a calibration device for calibrating a respective sensor device, the calibration device usable to bring a gate region of the field-effect transistor to an electrical calibration potential such that the electric current is independent of parameter fluctuations of the field-effect transistor.