TLE4990 Datasheet, PDF (8/24 Pages) Infineon Technologies AG – Programmable Linear Output Hall Sensor

TLE4990
Programmable Linear Hall Sensor
Functional Description
Transfer Functions
The examples in Figure 3 show how different magnetic field ranges can be mapped to
the output voltage.
• Polarity mode:
– Unipolar : only magnetic fields in one direction are measured.
The zero field voltage is near to the GND level.
– Bipolar: Magnetic fields can be measured in both orientations.
The zero field voltage is about the half voltage.
B (mT)
125
V_OUT (V)
5
B (mT)
50
V_OUT (V)
5
2.5
0
0
0
0
V_OUT
-125
Example 1: Bipolar,
setting used in -E6782 version
Figure 3
Examples of Operation
-50
TLE4990_MAGNETIC_RANGE
Example 2: Unipolar
B
B
Increase of B : Increase of V_OUT
TLE4990 FIELD DIRECTION
Increase of B : Decrease of V_OUT
Figure 4 Magnetic Field Direction Definition
Data Sheet
8
V 2.0, 2004-05