Crankshaft sensor IC has at least one filter device, especially a low pass filter with an at least partly variable resistance unit and capacitor unit after resistance unit and grounded

摘要

The device has at least one position transducer wheel (1) on the crankshaft, two Hall cells, a differential amplifier (21), at least one filter device (22,23), especially a low pass filter with a resistance unit in an output line of the of the amplifier and a capacitor unit after the resistance unit and grounded, a Schmitt trigger (30) and an output transistor (31). The filter device has an at least partly variable resistance unit. An independent claim is also included for the following: a filter, especially a low-pass filter.