AS5045-ASST datasheet(32/47 Pages) AMSCO

32 / 47 page

Page 32

ams Datasheet

Document Feedback

[v2-01] 2017-Jul-13

AS5045 − Detailed Description

Angular Output Tolerances

Accuracy

Accuracy is defined as the error between measured angle and

actual angle. It is influenced by several factors:

• The non-linearity of the analog-digital converters

• Internal gain and mismatch errors

• Non-linearity due to misalignment of the magnet

As a sum of all these errors, the accuracy with centered magnet

= (Errmax – Errmin)/2 is specified as better than ±0.5 degrees @

25°C (see Figure 33) Misalignment of the magnet further

reduces the accuracy. Figure 32 shows an example of a

3D-graph displaying non-linearity over XY-misalignment. The

center of the square XY-area corresponds to a centered magnet

(see dot in the center of the graph). The X- and Y- axis extends

to a misalignment of

±1mm in both directions. The total

misalignment area of the graph covers a square of 2x2 mm

(79x79mil) with a step size of 100μm.

For each misalignment step, the measurement as shown in

Figure 33 is repeated and the accuracy (Errmax – Errmin)/2 (e.g.

0.25°) is entered as the Z-axis in the 3D-graph.

Figure 32:

Example of Linearity Error over XY Misalignment

-1000

-700

-400

-100

200

500

800

Linearity Error over XY-misalignment [°]

AS5045-ASST 数据表(PDF) 32 Page - ams AG

AS5045-ASST 数据表(HTML) 32 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

数据表下载