AS5040-ASST View Datasheet(PDF) - austriamicrosystems AG
Part Name
Description
MFG CO.
'AS5040-ASST' PDF : 61 Pages View PDF
AS5040 − Angular Output Tolerances
Figure 45:
Example of Linearity Error Over 360º
The maximum non-linearity error on this example is better than
±1 degree (inner circle) over a misalignment radius of ~0.7mm.
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 ±1.4 degrees.
The magnet used for this measurement was a cylindrical NdFeB
(Bomatec® BMN-35H) magnet with 6mm diameter and 2.5mm in
height.
0.5
0.4
0.3
0.2
0.1
0
-0.1 1
- 0.2
- 0.3
- 0.4
- 0.5
Linearity error with centered magnet [degrees]
Err max
transition noise
55 109 163 217 271 325 379 433 487 541 595 649 703 757 811 865 919 973
Err min
Transition Noise
Transition noise is defined as the jitter in the transition between
two steps.
Due to the nature of the measurement principle (Hall sensors
+ Preamplifier + ADC), there is always a certain degree of noise
involved.
This transition noise voltage results in an angular transition
noise at the outputs. It is specified as 0.12 degrees rms (1
sigma)1
This is the repeatability of an indicated angle at a given
mechanical position.
1. Statistically, 1 sigma represents 68.27% of readings,
3 sigma represents 99.73% of readings.
Page 46
Document Feedback
ams Datasheet
[v2-12] 2017-Jun-20
Share Link: 
