AS5040 View Datasheet(PDF) - austriamicrosystems AG

Part Name

Description

Manufacturer

AS5040

10Bit 360° Programmable Magnetic Rotary Encoder

austriamicrosystems AG 

AS5040

Data Sheet

Figure 20: Typical Magnet and Magnetic Field Distribution

typ. 6mm diameter

N

S

Magnet axis

R1

Magnet axis

Vertical field

component

Bv

(45…75mT)

Vertical field

component

0

360

NS

R1 concentric circle;

radius 1.1mm

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 IC

package as shown in Figure 21:

Figure 21: Defined IC Center and Magnet Displacement Radius

3.9 mm

1

3.9 mm

2.433 mm

2.433 mm

Defined

center

Rd

Area of recommended maximum

magnet misalignment

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 with reference to the edge of pin #1 (see Figure 21). This radius includes the placement tolerance of the chip within

the SSOP-16 package (+/- 0.235mm). The displacement radius Rd is 0.485mm with reference to the center of the chip

(see section 13: Alignment Mode)

www.austriamicrosystems.com

Revision 2.10

23 - 33

Share Link: