TLE4945LHALA1 Datasheet, PDF (5/20 Pages) Infineon Technologies AG – Uni- and Bipolar Hall IC Switches for Magnetic Field Applications

TLE4905L, TLE4935L, TLE4945L, TLE4945-2L
Circuit Description
The circuit includes Hall generator, amplifier and Schmitt-Trigger on one chip. The internal
reference provides the supply voltage for the components. A magnetic field perpendicular to the
chip surface induces a voltage at the hall probe. This voltage is amplified and switches a Schmitt-
trigger with open-collector output. A protection diode against reverse power supply is integrated.
The output is protected against electrical disturbances.
Threshold
Generator
V_S ¹
3Q
Hall-
Generator
V_S
V_Ref
Figure 2 Block Diagram
Amplifier
2
GND
Schmitt-
Trigger
Output
Stage
AEB01243
Data Sheet
3
V1.5, 2007-11