In the paper we can get info around application, application circuit, sensors, rotational speed sensors, and detector circuit. This paper gives us discussion around interface circuit, microcontroller, performance, equation, and comparator.
Lots of information regarding circuit, speed sensors, hall sensor, rotational speed sensor, and speed sensor are explained inside the paper. The following are taken from the paper:
( ) Vhyst = I HI MIN − I LOMAX ⋅ RS VrefTYP = ( ) ΔVth = (5) 2 Taking into consideration the worst case supply current limits of the speed sensor, which should be used in the implemented application circuit, the equation will be: (3) Considering the other components tolerances of the interface circuit, like 1% precision for the shunt resistor and the threshold voltage divider resistors, 1% accuracy of the supply voltage (VDC = 5V), using equations (4) the resulted worst case maximum hysteresis will be: VhystWC < 336,5mV.
Even more, this paper presents discussion about the interface circuit, the speed sensor, measurement, and the voltage comparator.