TLE4923_05 Datasheet, PDF (18/24 Pages) Infineon Technologies AG – Dynamic Differential Hall Effect Sensor IC

Wheel Profile
N(S)
S(N)
1
3
B₁
B₂
TLE4923
Application Notes
Missing Tooth
Magnetic Field Difference
∆B = B₂ ^_ B₁
∆B_RP = 0.75 mT
∆B_OP = ^_0.75 mT
Small Airgap
Large Airgap
∆B_HY
Output Signal I_S
( ) ^Operate
Release
point:
point:
B₂
B₂
_
_
B₁
B₁
<
>
∆B_OP
∆B_RP
switches
switches
the
the
output
output
ON
OFF
high
low ^current
∆B_RP = ∆B_OP + ∆B_HY
The magnetic field is defined as positive if the south pole of
the magnet shows towards the rear side of the IC housing.
Figure 13 System Operation
AED01900
Data Sheet
18
V 1.0, 2005-04