TLE4998P3CE1200 Datasheet, PDF (19/32 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

TLE4998P3C E1200
The offset value can be calculated by:
DY_OS
=
(_{---O-----S----–-----1---6---3---8---4----}) _{× 100}
4096
Signal Processing
6.4
DSP Input Low Pass Filter
A digital low-pass filter is placed between the Hall A/D converter and the DSP an can be
to reduce the noise level. The low-pass filter has a constant DC amplification of 0 dB
(gain of 1), which means that its setting has no influence on the internal Hall A/D
converter value.
The bandwidth can be set in 8 steps.
Table 10 Low-Pass Filter Setting
Note: Parameter LP
Cutoff frequency in Hz (at -3 dB point)¹⁾
0
80
1
240
2
440
3
640
4
860
5
1100
6
1390
7
off
1) _{As this is a digital filter running with an RC-based oscillator, the cutoff frequency may vary within ±20%}
Table 11 Low-Pass Filter
Parameter
Symbol Limit Values Unit Notes
min. max.
Register size
LP
3
bit
Corner frequency
∆f
- 20 + 20 %
variation
Note: In range 7 (filter off), the output noise increases.
Data Sheet
19
Rev 1.1, 2009-09