AS5134 DB austriamicrosystems, AS5134 DB Datasheet - Page 32

• Manufacturer Part Number: AS5134 DB
• Description: BOARD DEMO AS5134
• Manufacturer: austriamicrosystems

Specifications of AS5134 DB

• Sensor Type: Magnetic, Rotary Position
• Sensing Range: 360°
• Interface: USB
• Voltage - Supply: 5V USB or 9V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AS5134
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Sensitivity: -

AS5134
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
For volume production, the placement tolerance of the IC within the package (±0.235mm) must also be taken into account. The total nonlinearity
error over process tolerances, temperature and a misalignment circle radius of 0.25mm is specified better than ±2 degrees.
The magnet used for this measurement is a cylindrical NdFeB (Bomatec® BMN-35H) magnet with 6mm diameter and 2.5mm in height.
8.5.6 Mounting the Magnet
Generally, for on-axis rotation angle measurement, the magnet must be mounted centered over the IC package. However, the material of the
shaft into which the magnet is mounted, is also of big importance.
Magnetic materials in the vicinity of the magnet will distort or weaken the magnetic field being picked up by the Hall elements and cause addi-
tional errors in the angular output of the sensor.
Figure 24. Magnetic Field Lines in Air
Figure 24
shows the ideal case with the magnet in air. No magnetic materials are anywhere nearby.
Figure 25. Magnetic Field Lines in Plastic or Copper Shaft
If the magnet is mounted in non-magnetic material, such as plastic or diamagnetic material, such as copper, the magnetic field distribution is not
disturbed. Even paramagnetic material, such as aluminium may be used. The magnet may be mounted directly in the shaft
(see Figure
25).
Note: Stainless steel may also be used, but some grades are magnetic. Therefore, steel with magnetic grades should be avoided.
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