Method for detecting speed signal from Hall sensor in motor vehicle, involves converting digital current signal into another current signal using active circuits of converter circuit, where latter signal is detected by measuring circuit

摘要

The method involves converting a digital current signal (30) into another current signal i.e. digital current signal (40), under utilization of active circuits e.g. n-channel MOSFET (110) and operational amplifier (120), of a converter circuit (100), where the latter current signal is detected by a measuring circuit (140). The converter circuit is partially realized as an application specific integrated circuit (ASIC). The latter current signal is evaluated with respect to frequency and/or pulse control factor. An independent claim is also included for a converter circuit comprising an n-channel MOSFET.