TLE4925 Datasheet, PDF (23/25 Pages) Infineon Technologies AG – Differential Hall Sensor

PRELIMINARY
Appendix:
Calculation of mechanical errors:
Magnetic Signal
Output Signal
ϕ
∆ϕ ∆ϕ
Figure 20: Systematic Error^ϕ and Stochastic Error ∆ϕ
Systematic Phase Error ϕ
The systematic error comes in because of the delay-time between the threshold point
and the time when the output is switching. It can be calculated as follows:
ϕ
=
360° •
60
n
• t_d
ϕ
... systematic phase error in °
n
... speed of the camshaft-wheel in min^-1
t_d
... delay time (see specification) in sec
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