TLE4997E2 Datasheet, PDF (11/35 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4997
General
2.5
Transfer Functions
The examples in Figure 3 show how easily different magnetic field ranges can be
mapped to the output voltage.
• Polarity Mode:
– Unipolar: Only North- or South-oriented magnetic fields are measured.
– Bipolar: Magnetic fields can be measured in both orientations.
The limit points must not be symmetric to the zero field point.
• Inversion: The gain values can be set positive or negative.
B (mT)
50
V_OUT (V) B (mT)
5 100
V_OUT (V) B (mT)
5 200
V_OUT (V)
5
0
00
00
0
V_OUT
V_OUT
-50
-100
-200
Example 1:
- Bipolar
Example 2:
- Unipolar
- Big offset
- Output for 3.3 V
Example 3:
- Bipolar
- Inverted (neg. gain)
Figure 3 Examples of Operation
Note: Due to the ratiometry, voltage drops at the V_DD line are imaged in the output
signal.
Data Sheet
11
V 2.08, 2008-09