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)： 5/36頁
文件大小： 563K
代理商： KMA210
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
5 of 36
NXP Semiconductors
KMA210
Programmable angle sensor
Since the Anisotropic MR (AMR) effect is periodic over 180
, the sensor output is also
180
-periodic, where the angle is calculated relative to a freely programmable zero angle.
The dashed line indicates the mechanical zero degree position.
6. Analog output
The KMA210 provides one analog output signal on pin OUT/DATA. The measured angle
is converted linearly into a value, which is ratiometric to the supply voltage V
DD
. Either a
positive or a negative slope is provided for this purpose.
Table 3
describes the analog output behavior for a positive slope. If for example,
a magnetic field angle, above the programmed maximum angle
max
, but below the clamp
switch angle
sw(CL)
is applied to the sensor, then analog output is set to the upper
clamping voltage. If the magnetic field angle is larger than the clamp switch angle, the
analog output switches from upper to lower clamping voltage. In the case of a negative
slope, the clamping voltages are changed.
Table 3.
Magnetic field angle
max
<
<
sw(CL)
sw(CL)
<
<
ref
+ 180
The analog output voltage range encodes both angular and diagnostic information. A valid
angle value is between the upper and lower clamping voltage. If the analog output is in the
diagnostic range, that is below 4 %V
DD
or above 96 %V
DD
, an error condition has been
detected. The analog output repeats every 180
.
Fig 2.
Angular measurement directions
001aan665
a
H
ext
Analog output behavior for a positive slope
Analog output
V
(CL)u
V
(CL)l
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