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參數(shù)資料
| 型號(hào)： | KMA210 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 振動(dòng)和傾斜傳感器 |
| 英文描述： | Programmable angle sensor |
| 封裝： | KMA210<SOT1288|<<<1<Always Pb-free,; |
| 文件頁數(shù)： | 13/36頁 |
| 文件大?。?/td> | 563K |
| 代理商： | KMA210 |
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KMA210
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 30 June 2011
13 of 36
NXP Semiconductors
KMA210
Programmable angle sensor
12. Definition of errors
12.1 General
Angular measurement errors by the KMA210 result from linearity errors, temperature drift
errors and hysteresis errors.
Figure 6
shows the output signal of an ideal sensor, where
the measured angle
meas
corresponds ideally to the magnetic field angle
. This curve
will further be denoted as angle reference line
ref
(
) with a slope of 0.5 %V
DD
/degree.
The angular range is set to
max
= 180
and the clamping voltages are programmed to
V
(CL)l
= 5 %V
DD
and V
(CL)u
= 95 %V
DD
for a valid definition of errors.
12.2 Hysteresis error
The hysteresis error
hys
is defined as the maximum difference between the angles,
given by the device output when performing a positive (clockwise) rotation and negative
(counter clockwise) rotation over an angular range of 180
, measured at a constant
temperature.
Equation 1
gives the mathematical description for the hysteresis value
hys
:
(1)
Fig 6.
Definition of the reference line
001aag812
180
α
(deg)
φ
meas
(deg)
φ
ref
(
α
)
Fig 7.
Definition of the hysteresis error
001aag813
180
α
(deg)
φ
meas
(deg)
Δφ
hys
hys
( )
meas
180
(
)
meas
0
(
)
–
=
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