TLE4998P3C Datasheet, PDF (27/32 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998P3C
Calibration
9
Calibration
For the calibration of the sensor, a special hardware interface to a PC is required. All
calibration and setting bits can be temporarily written into a Random Access Memory
(RAM). This allows the EEPROM to remain untouched during the entire calibration
process, since the number of the EEPROM programming cycles is limited. Therefore,
this temporary setup (using the RAM only) does not stress the EEPROM.
The digital signal processing is completely deterministic. This allows a two-point
calibration in one step without iterations. After measuring the Hall output signal for the
two end points, the signal processing parameters Gain and Offset can be calculated.
Table 17 Calibration Characteristics
Parameter
Symbol Limit Values
min. max.
Temperature at
calibration
T_CAL
10 30
Two-point calibration ∆CY_CAL1 -0.2 0.2
accuracy
∆CY_CAL2 -0.2 0.2
Unit
°C
%
%
Notes
Position 1
Position 2
Note: Depending on the application and external instrumentation setup, the accuracy of
the two-point calibration can be improved.
Data Sheet
27
Rev 1.1, 2009-09