TLE4998S3C Datasheet, PDF (17/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998S3C
Signal Processing
• The temperature is normalized by subtraction of the reference temperature T₀ value
(zero point of the quadratic function)
• The linear path is multiplied with the TC₁ value
• In the quadratic path, the temperature difference to T₀ is squared and multiplied with
the TC₂ value
• Both path outputs are added together and multiplied with the Gain value from the
EEPROM
6.1
Magnetic Field Ranges
The working range of the magnetic field defines the input range of the A/D converter. It
is always symmetrical around the zero field point. Any two points in the magnetic field
range can be selected to be the end points of the output value. The output value is
represented within the range between the two points.
In the case of fields higher than the range values, the output signal may be distorted. The
range must be set before the calibration of offset and gain.
Table 6
Range
Low
Mid
High
Range Setting
Range in mT¹⁾
± 50
± 100
± 200
Parameter R
3
1²⁾
0
1) _{Ranges do not have a guaranteed absolute accuracy. The temperature pre-calibration is performed in the mid}
range (100 mT)
2) _{Setting R = 2 is not used, internally changed to R = 1}
Table 7
Range
Parameter
Symbol Limit Values Unit Notes
min. max.
Register size
R
2
bit
Data Sheet
17
Rev 1.1, 2009-09