KMT-32B磁阻傳感器
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KMT-32B磁阻傳感器
文本預(yù)覽
MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
Preliminary Data Sheet
KMT32B
Axel Bartos
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
LEGAL DISCLAIMER
This product is not designed for use in life support appliances, devices or systems where malfunction of this product can
reasonably be expected to result in personal injury. HL Planartechnik GmbH customers using or selling this product for use in such
applications do so at their own risk and agree to fully indemnify HL Planartechnik GmbH for any damages resulting from such
improper use or sale.
This data sheet contains target specifications for product development which my be subject to changes without notice.
GENERAL DESCRIPTION
The KMT32B is a magnetic field sensor based on the anisotropic magnetoresistance effect. The sensor
contains two parallel supplied Wheatstone bridges, which enclose a sensitive angle of 45 degrees.
A rotating magnetic field in the surface parallel to the chip (x-y plane) will deliver two independent
sinusoidal output signals, one following a cos(2α) and the second following a sin(2α) function, α being
the angle between sensor and field direction (see figure 2).
15
10
5
0
0 90 180 270 360
-5
-10
-15
αααα [deg]
Figure 1: Characteristic curves for KMT32B
The KMT32B is suited for high precision angle measurement applications under low field conditions
(regular 25 kA/m, with reduced accuracy applicable down to 8 kA/m; beware of earth’s magnetic field !).
CIRCUIT DIAGRAM
Br.1 Br.2
Fig. 3
GND -Vo1 Vcc1 +Vo1 -Vo2 Vcc2 -Vo2
D
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04
]V/Vm[
ccU/oU
y
field direction
α
Fig. 2
bridge 1 (cosine) bridge 2 (sine)MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
CHARACTERISTIC VALUES (PRELIMINARY)
PARAMETER SYMBOL UNIT MIN TYP MAX CONDITION
A. Operating Limits
max. supply voltage V V 10
cc,max
max. current (single bridge) I mA 4
cc,max
power dissipation P mW TBD @T= TBD °C
tot
operating temperature T
op
°C -40 +150
storage temperature T
st
°C -25 +150
B. Sensor Specifications (T=25 °C)
Supply voltage V V 5 8.5
cc
Resistance (single bridge) R
b
? 2400 3000 3600
Signal amplitude ?V/V mV/V 17 20 Condition A, B
cc
Offset voltage V mV/V -1 0 +1 Condition A, B
off
angular inaccuracy ?α deg 0.05 0.2 Condition A, B
angular hysteresis ?αH deg 0.1 Condition A, B
C. Sensor Specifications
TC of amplitude TCSV %/K -0.36 -0.32 -0.28 Condition A, C
TC of resistance TCBR %/K +0.27 +0.32 +0.37 Condition A, C
TC of offset TCVoff μV/V/K -4 0 +4 Condition A, C
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the
limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of this specification is not implied. Exposure to limiting
values for extended periods may affect device reliability.
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
MEASUREMENT CONDITIONS
PARAMETER SYMBOL UNIT CONDITION
A. Set Up Conditions
ambient temperature T °C T = 23±5 °C (unless otherwise noted)
supply voltage V V Vcc=5 V
cc
applied magnetic field H kA/m H=25 kA/m
B. Sensor Specifications (T=25 °C, 360° turn , H=25 kA/m , Vo >0, Vo <0)
HLP Confidential
KMT32B
Preliminary Data Sheet
KMT32B
Axel Bartos
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
LEGAL DISCLAIMER
This product is not designed for use in life support appliances, devices or systems where malfunction of this product can
reasonably be expected to result in personal injury. HL Planartechnik GmbH customers using or selling this product for use in such
applications do so at their own risk and agree to fully indemnify HL Planartechnik GmbH for any damages resulting from such
improper use or sale.
This data sheet contains target specifications for product development which my be subject to changes without notice.
GENERAL DESCRIPTION
The KMT32B is a magnetic field sensor based on the anisotropic magnetoresistance effect. The sensor
contains two parallel supplied Wheatstone bridges, which enclose a sensitive angle of 45 degrees.
A rotating magnetic field in the surface parallel to the chip (x-y plane) will deliver two independent
sinusoidal output signals, one following a cos(2α) and the second following a sin(2α) function, α being
the angle between sensor and field direction (see figure 2).
15
10
5
0
0 90 180 270 360
-5
-10
-15
αααα [deg]
Figure 1: Characteristic curves for KMT32B
The KMT32B is suited for high precision angle measurement applications under low field conditions
(regular 25 kA/m, with reduced accuracy applicable down to 8 kA/m; beware of earth’s magnetic field !).
CIRCUIT DIAGRAM
Br.1 Br.2
Fig. 3
GND -Vo1 Vcc1 +Vo1 -Vo2 Vcc2 -Vo2
D
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04
]V/Vm[
ccU/oU
y
field direction
α
Fig. 2
bridge 1 (cosine) bridge 2 (sine)MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
CHARACTERISTIC VALUES (PRELIMINARY)
PARAMETER SYMBOL UNIT MIN TYP MAX CONDITION
A. Operating Limits
max. supply voltage V V 10
cc,max
max. current (single bridge) I mA 4
cc,max
power dissipation P mW TBD @T= TBD °C
tot
operating temperature T
op
°C -40 +150
storage temperature T
st
°C -25 +150
B. Sensor Specifications (T=25 °C)
Supply voltage V V 5 8.5
cc
Resistance (single bridge) R
b
? 2400 3000 3600
Signal amplitude ?V/V mV/V 17 20 Condition A, B
cc
Offset voltage V mV/V -1 0 +1 Condition A, B
off
angular inaccuracy ?α deg 0.05 0.2 Condition A, B
angular hysteresis ?αH deg 0.1 Condition A, B
C. Sensor Specifications
TC of amplitude TCSV %/K -0.36 -0.32 -0.28 Condition A, C
TC of resistance TCBR %/K +0.27 +0.32 +0.37 Condition A, C
TC of offset TCVoff μV/V/K -4 0 +4 Condition A, C
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the
limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of this specification is not implied. Exposure to limiting
values for extended periods may affect device reliability.
HL PLANARTECHNIK GmbH ? Hauert 13 ? 44227 Dortmund ? Germany ? www.hlplanar.de
service@hlplanar.de ? phone: +49-(0)231-97400 ? fax: +49-(0)231-974020
KMT32B_PreliminaryDataSheet (2004-04-13).doc Last update 13.04.04MAGNETIC ANGLE SENSOR Preliminary
HLP Confidential
KMT32B
MEASUREMENT CONDITIONS
PARAMETER SYMBOL UNIT CONDITION
A. Set Up Conditions
ambient temperature T °C T = 23±5 °C (unless otherwise noted)
supply voltage V V Vcc=5 V
cc
applied magnetic field H kA/m H=25 kA/m
B. Sensor Specifications (T=25 °C, 360° turn , H=25 kA/m , Vo >0, Vo <0)
AIGCKMT-32B磁阻傳感器是一款專(zhuān)門(mén)應(yīng)用于電機(jī)、機(jī)器人、工業(yè)自動(dòng)化以及各種測(cè)速與位置控制系統(tǒng)的高精度傳感器。它采用磁阻效應(yīng)原理工作，通過(guò)檢測(cè)磁場(chǎng)強(qiáng)度的變化來(lái)感知旋轉(zhuǎn)物體的位置、速度或者電流脈沖等參數(shù)。該型號(hào)傳感器通常具有如下特性：
1. **類(lèi)型**：屬于霍爾式或基于GMR（巨磁電阻）技術(shù)的磁阻傳感器，其中32B可能代表其產(chǎn)品系列代號(hào)或具體規(guī)格參數(shù)。
2. **技術(shù)指標(biāo)**：具備高分辨率和快速響應(yīng)能力，能夠?qū)崿F(xiàn)對(duì)微小磁場(chǎng)變化的敏感捕捉，最高測(cè)速精度可達(dá)到一定的轉(zhuǎn)速范圍，并能在寬廣的工作溫度范圍內(nèi)保持穩(wěn)定性能。
3. **應(yīng)用領(lǐng)域**：廣泛適用于伺服電機(jī)、步進(jìn)電機(jī)、編碼器以及其他需要精確角度或速度控制的設(shè)備中，如 CNC 機(jī)床、工業(yè)機(jī)器人手臂、電梯控制系統(tǒng)等。
4. **輸出信號(hào)**：提供電信號(hào)（例如模擬電壓、數(shù)字脈沖等）作為反饋，便于控制器解析處理并實(shí)現(xiàn)閉環(huán)控制。
綜上所述，KMT-32B磁阻傳感器是一種精密的非接觸式位移測(cè)量元件，在現(xiàn)代電氣工程及自動(dòng)化系統(tǒng)中發(fā)揮著關(guān)鍵作用。
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