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TLE4998S3C Datasheet, PDF (8/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor | |||
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TLE4998S3C
General
The IC is produced in BiCMOS technology with high voltage capability, and it also has
reverse-polarity protection.
Digital signal processing using a 16-bit DSP architecture together with digital
temperature compensation guarantee excellent long-time stability compared to analog
compensation methods.
While the overall resolution is 16 bits, some internal stages work with resolutions up to
20 bits.
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
⢠The chopped Hall-effect cell and continuous-time A/D conversion ensure a very low
and stable magnetic offset
⢠A programmable low-pass filter to reduce noise
⢠The temperature is measured and A/D converted, too
⢠Temperature compensation is done digitally using a second-order function
⢠Digital processing of output value is based on zero field and sensitivity value
⢠The output value range can be clamped by digital limiters
⢠The final output value is represented by the data nibbles of the SENT protocol
Data Sheet
8
Rev 1.1, 2009-09
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