MLX90288 Datasheet, PDF (11/19 Pages) Melexis Microelectronic Systems – SMD Programmable Linear Hall Sensor IC Featuring Analog Ratiometric Output

MLX90288
SMD Programmable Linear Hall Sensor IC
Featuring Analog Ratiometric Output
6.2.14 CRC[9:0]
• Standard CRC10 for data integrity
• Polynomial is x¹⁰+x⁹+x⁵+x⁴+x¹+1
• EEPROM data is fed LSB first, per address (5bits, after majority voting) sequentially
• The CRC integrity will be preserved by the PSF software when using the PTC04. It could not be
changed manually.
6.3 End User Programmable Parameters
6.3.1 FAULTONCLIP
• Enable error reporting if ADC is clipping for 4 or more successive times
• The diagnostic side for this error is defined by DIAGINFAULT
6.3.2 DIAGINFAULT
• Defines to which side the output will go in case of an active error such as CRC fail or ADC clipping,
the latter only in case FAULTONCLIP is set
• The thresholds are specified under Section 5.6
6.3.3 FILTCODE[3:0]
• The digital IIR filter offers noise reduction and low pass filtering with programmable cut off frequency
FILTCODE[3:0]
0
1
2
3
4
5
6
7
8
Cut-off frequency [Hz]
1114
557
279
139
70
35
17
9
4
Table 8: Filter cut-off frequencies
• For Filter code from 9 to 15, the rounding error becomes too high versus the resolution so those
codes are not to be used.
• This table only applies in case the temperature sensor is enabled, otherwise the cut-off frequency
should be multiplied by a factor of 2 since no more temperature ADC’s are performed anymore.
6.3.4 TEMPSENSOR
• Enables digital gain compensation over temperature (GainMag)
• Requires proper calibration of TEMPOFF and TEMPTC, as well as the SECONDORDERTC
3901090288
Rev 002
Page 11 of 19
May/12