MLX90316_05 Datasheet, PDF (6/34 Pages) List of Unclassifed Manufacturers – Rotary Position Sensor IC

MLX90316
Rotary Position Sensor IC
5. Absolute Maximum Ratings
Parameter
Supply Voltage, VDD (overvoltage)
Reverse Voltage Protection
Positive Output Voltage
Output Current (IOUT)
Reverse Output Voltage
Reverse Output Current
Operating Ambient Temperature Range, TA
Storage Temperature Range, TS
Magnetic Flux Density
Value
+ 20 V
− 10 V
+ 10 V
+ 14 V (200 s max − TA = + 25°C)
± 30 mA
− 0.3 V
− 50 mA
− 40°C … + 150°C
− 40°C … + 150°C
± 700 mT
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
6. Detailed Description
As described on the block diagram (Figure 1), the magnetic flux density parallel to the IC surface (i.e. B_//)
is sensed through the Tria⊗is™ sensor front-end. This front-end consists into two orthogonal pairs (for
each of the two directions parallel with the IC surface i.e. X and Y) of conventional planar Hall plates (blue
area on Figure 3) and an Integrated Magneto-Concentrator (IMC® − yellow disk on Figure 3).
Figure 3 − Tria⊗is™ sensor front-end (4 Hall plates + IMC® disk)
Both components of the applied flux density B_// are measured individually i.e. B_X// and B_Y//. Two orthogonal
components (respectively B_X⊥ and B_Y⊥) proportional to the parallel components (respectively B_X// and B_Y//)
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 (diametrally magnetized) rotates above the IC as described on Figure 2, the sensing
stage provides two differential signals in quadrature (sine and cosine − Figures 4 & 5).
3901090316
Rev. 001
Page 6 of 34
Data Sheet
4 October 05