KMT-32B磁阻传感器
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KMT-32B磁阻传感器
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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
Ω 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
Ω 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磁阻传感器是一款专门应用于电机、机器人、工业自动化以及各种测速与位置控制系统的高精度传感器。它采用磁阻效应原理工作，通过检测磁场强度的变化来感知旋转物体的位置、速度或者电流脉冲等参数。该型号传感器通常具有如下特性：
1. **类型**：属于霍尔式或基于GMR（巨磁电阻）技术的磁阻传感器，其中32B可能代表其产品系列代号或具体规格参数。
2. **技术指标**：具备高分辨率和快速响应能力，能够实现对微小磁场变化的敏感捕捉，最高测速精度可达到一定的转速范围，并能在宽广的工作温度范围内保持稳定性能。
3. **应用领域**：广泛适用于伺服电机、步进电机、编码器以及其他需要精确角度或速度控制的设备中，如 CNC 机床、工业机器人手臂、电梯控制系统等。
4. **输出信号**：提供电信号（例如模拟电压、数字脉冲等）作为反馈，便于控制器解析处理并实现闭环控制。
综上所述，KMT-32B磁阻传感器是一种精密的非接触式位移测量元件，在现代电气工程及自动化系统中发挥着关键作用。
