A monolithic integrated sensor circuit is disclosed comprising a sensor system for generating an electronic sensor signal; a supply unit for the sensor system; an amplifying stage for amplifying the sensor signal; a plurality of inverting devices in the signal path of the amplifying stage which reverse the polarity of the sensor signal at equal time intervals, the time intervals and inversion of the sensor signal being controlled by a clock signal source; and an averaging combiner stage whose input receives an amplified sensor signal and whose output has a reference polarity which is controlled by means of the inverting devices in such a way as to be always the same regardless of the switching state in the signal path. The monolithic integrated sensor circuit of the present invention minimizes the offset error.