mlx90316 Melexis Company, mlx90316 Datasheet - Page 8
mlx90316
Manufacturer Part Number
mlx90316
Description
Rotary Position Sensor Ic
Manufacturer
Melexis Company
Datasheet
1.MLX90316.pdf
(41 pages)
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Both components of the applied flux density B
components (respectively B
are induced through the IMC and can be measured by both respective pairs of conventional planar Hall
plates as those are sensitive to the flux density applied orthogonally to them and the IC surface.
While a magnet (diametrically magnetized) rotates above the IC as described on Figure 3, the sensing
stage provides two differential signals in quadrature (sine and cosine − Figure 5 and Figure 6)
3901090316
Rev. 003
Figure 6 – Tria⊗is™ sensor front-end − Output signals − V
-100
-200
-300
-400
-1000
-1500
-2000
400
300
200
100
2000
1500
1000
-500
500
0
0
Figure 5 – Magnetic Flux Density – B
0
0
X⊥
90
and B
90
Y⊥
180
BX
180
) proportional to the parallel components (respectively B
VX
270
270
//
are measured individually i.e. B
Alpha (Degree)
Alpha (Degree)
Page 8 of 41
360
360
X
450
∝ cos(α) & B
450
X
∝ B
Rotary Position Sensor IC
540
540
X
∝ cos(α) & V
BY
VY
Y
∝ sin(α)
630
630
X//
MLX90316
and B
Y
720
720
∝ B
Y//
. Two orthogonal
Y
∝ sin(α)
X//
Data Sheet
and B
April 07
Y//
)