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Table 4-3
Offset
Parameter
1)
Offset range
Offset quantization steps
1) Infineon pre-calibrates the samples at zero field to typically 50% output value in 100 mT range. It is recommended to do a
final 2-point calibration of each IC within the application.
4.4
Low-Pass Filter - LP
A configurable digital low-pass filter is implemented at the output of the Hall ADC. The possible settings are shown
in
Table
4-4.
Figure 4-1
left to right). The update rate of the low-pass filter output is nominally 16 kHz.
Attention: The bit arrangement of the LP-Filter register is "0,2,1" (see EEPROM map in Figure 3-13).
Therefore, the bits have to be rearranged accordingly to obtain the desired configuration. For
example, the LP-filter setting "6" corresponds to the binary "011" in the LP-filter register.
Table 4-4
Low Pass Filter Setting
Parameter LP
Nominal cutoff frequency in Hz (-3 dB point)
0
78
1
244
2
421
3
615
4
826
5
1060
6
1320
7
Off
User's Manual
Symbol
V
OS
ΔOUT
OS
shows the filter characteristics as a magnitude plot for the settings 78 Hz to 1320 Hz (from
Configuration & Calibration Parameters
Values
Min.
Typ.
Max.
-400
–
399
–
1.22
–
21
TLE4997
User's Manual
Unit
Note / Test Condition
%V
DD
mV
at V
= 5V
DD
generally V
/4095
DD
v01_01, 2019-08
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