MLX90367EDC-ABS Datasheet, PDF (22/36 Pages) Melexis Microelectronic Systems – TriaxisÒ Position Sensor IC feat. SENT

MLX90367
Triaxis^® Position Sensor IC feat. SENT
15.1.2. Discontinuity Point (or Zero Degree Point)
The Discontinuity Point defines the 0°point on the circle. The discontinuity point places the origin at any
location of the trigonometric circle. The DP is used as reference for all the angular measurements.
360°
0°
The placement of the discontinuity
point (0 point) is programmable.
Figure 8: Discontinuity Point Positioning
15.1.3. 3-Pts LNR Parameters (MLX90367 ABU only)
The LNR parameters, together with the clamping values, fully define the relation (the transfer function)
between the digital angle and the output signal.
The shape of the MLX90367 transfer function from the digital angle value to the output voltage is
described by the drawing below. Six segments can be programmed but the clamping levels are
necessarily flat.
Two, three, or even five calibration points are then available, reducing the overall non-linearity of the IC by
almost an order of magnitude each time. Three or five point calibration will be preferred by customers
looking for excellent non-linearity figures. Two-point calibrations will be preferred by customers looking for
a cheaper calibration set-up and shorter calibration time.
MLX90367
Rev 5.2
Figure 9: 3 points linearity correction
Page 22 of 36
Datasheet
Dec. 15, 15