MLX90366 Datasheet, PDF (13/34 Pages) Melexis Microelectronic Systems – Triaxis Position Sensor Assembly feat. SENT

MLX90366
Triaxis^ Position Sensor Assembly feat. SENT
9. MLX90366 Accuracy Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for T_A as specified by the
Temperature suffix (L).
Parameter
Symbol
Test Conditions
Min Typ Max
ADC Resolution on the raw
RADC
15
signals sine and cosine⁽⁵⁾
Thermal Offset Drift #1⁽⁶⁾
at the DSP input (excl. DAC and
output stage)
TA from -40 to 125°C
TA from -40 to 150°C
-60
+60
-90
+90
Thermal Drift of Sensitivity
Mismatch⁽⁷⁾
XY axis
XZ (YZ) axis
- 0.5
+ 0.5
-1
+1
Magnetic Angle phase error
TA = 25C – XY axis
TA = 25C – XZ axis
TA = 25C – YZ axis
-0.3
0.3
-2
2
-2
2
Thermal Drift of Magnetic Angle
XY axis, XZ (YZ) axis
0.01
phase error
XY – Intrinsic Linearity Error⁽⁸⁾
Le T_A = 25C – factory trim. “SMISM”
-1
1
XZ - Intrinsic Lin. Error⁽¹¹⁾
Le T_A = 25C – “k” trimmed for XZ
-2.5 1.25 2.5
YZ - Intrinsic Lin. Error⁽¹¹⁾
Le T_A = 25C – “k” trimmed for YZ
-2.5 1.25 2.5
Noise pk-pk⁽⁹⁾
FILTER = 0, 40mT
0.10 0.2
FILTER = 1 (recommended) , 30mT
0.10 0.2
Units
bits
LSB15
%
Deg.
Deg.
Deg
Deg
Deg
Deg
5 _{16 bits corresponds to 15 bits + sign. Internal computation is performed using 16 bits.}
6 _{For instance, in case of a rotary position sensor application, Thermal Offset Drift #1 equal ± 60LSB15 yields to max. ± 0.3 Deg.}
angular error for the computed angular information (output of the DSP). This is only valid if k = 1. “MLX90365 Front-End
Application Note” will be released for more details.
7 _{For instance, in case of a rotary position sensor application, Thermal Drift of Sensitivity Mismatch equal ± 0.5% yields to max. ±}
0.15 Deg. angular error for the computed angular information (output of the DSP). See “MLX90365 Front-End Application Note”
for more details.
8 _{The Intrinsic Linearity Error refers to the IC itself (offset, sensitivity mismatch, orthogonality) taking into account an ideal rotating}
field for BX and BY. Once associated to a practical magnetic construction and the associated mechanical and magnetic
tolerances, the output linearity error increases. However, it can be improved with the multi-point end-user calibration. The intrinsic
Linearity Error for Magnetic angle XZ and YZ can be reduced through the programming of the k factor.
9 _{Noise pk-pk (peak-to-peak) is here intended as 6 times the Noise standard Deviation. The application diagram used is}
described in the recommended wiring. For detailed information, refer to section Filter in application mode (Section 14.4).
MLX90366
Rev. 1.0
Page 13 of 34
Datasheet
25/Jun/13