AS5045-ASST datasheet(30/47 Pages) AMSCO

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[v2-01] 2017-Jul-13

AS5045 − Detailed Description

Physical Placement of the Magnet

The best linearity can be achieved by placing the center of the

magnet exactly over the defined center of the chip as shown in

the drawing below.

Figure 31:

Defined Chip Center and Magnet Displacement Radius

Magnet Placement. The magnet’s center axis should be aligned

within a displacement radius Rd of 0.25mm from the defined

center of the IC.

The magnet may be placed below or above the device. The

distance should be chosen such that the magnetic field on the

die surface is within the specified limits (see Figure 30). The

typical distance “z” between the magnet and the package

surface is 0.5mm to 1.5mm, provided the use of the

recommended magnet material and dimensions (6mm x 3mm).

Larger distances are possible, as long as the required magnetic

field strength stays within the defined limits.

However, a magnetic field outside the specified range may still

produce usable results, but the out-of-range condition will be

indicated by MagINCn (pin 1) and MagDECn (pin 2), see

Figure 4.

Area of recommended maximum mag-

net misalignment

Defined

center

3.9mm

AS5045-ASST 数据表(PDF) 30 Page - ams AG