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TLE4997_08 Datasheet, PDF (10/34 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor | |||
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TLE4997
General
2.3
Principle of Operation
⢠A magnetic flux is measured by a Hall-effect cell.
⢠The output signal from the Hall-effect cell is converted from Analog to Digital signals.
⢠The chopped Hall-effect cell and continuous-time A to D conversion provide very low
and stable magnetic offset.
⢠A programmable Low-Pass filter reduces the noise.
⢠The temperature is measured and A to D converted.
⢠Temperature compensation is processed digitally using a second order function.
⢠Digital processing of output voltage is based on zero field and sensitivity value.
⢠The output voltage range can be clamped by digital limiters.
⢠The final output value is D to A converted.
⢠The output voltage is proportional to the supply voltage (ratiometric DAC).
⢠An On-Board-Diagnostics (OBD) circuit connects the output to VDD
or GND in case of errors.
2.4
Further Notes
Product qualification is based on âAEC Q100 Rev. Gâ (Automotive Electronics Council -
Stress test qualification for integrated circuits).
Data Sheet
10
V 2.08, 2008-09
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