参数资料
型号: MLX90217LUA-CAA-000-BU
厂商: Melexis Technologies NV
文件页数: 25/46页
文件大小: 498K
描述: IC SENSOR CAM HALL EFFECT UA
标准包装: 1,000
传感范围: 400mT 跳闸,50mT 释放
类型: 专用型
电源电压: 3.5 V ~ 24 V
电流 - 电源: 6mA
电流 - 输出(最大): 25mA
输出类型: 数字,开路集电极
特点: 轮齿类型
工作温度: -40°C ~ 150°C
封装/外壳: TO-226-3,TO-92-3 短体
供应商设备封装: TO-92UA
包装: 散装
产品目录页面: 1460 (CN2011-ZH PDF)
其它名称: MLX90217
MLX90217CA
MLX90217LUA
MLX90217LUA-ND
3-33
Graph 8, Slide-by with Magnet A
Change in Activation Distance With TC
There is a 17% difference in flux density over the entire temperature range compared with the fixed-tem-
perature case in Graph 7. Note that because of the negative temperature coefficient of the magnet, the neg-
ative temperature (-40
0
C) adds flux density to the magnet, while the positive temperature (85
0
C) reduces
flux density.
Graph 9 shows how the air gap tolerance and temperature coefficient add together and cause tolerance
buildup in the Hall Effect system.
Graph 9, Slide-by Method with Magnet A
Change in Activation distance with Air Gap & TC
The two plotted lines in Graph 9 show the minimum and maximum possible cases when temperature and
air gap are considered. The overall difference in distance between min. BRP and max. BOP is slightly
larger because of the sum of tolerances being considered. This design example has shown the tolerance
buildup of air gap, benefits of slope, Hall IC BOP to BRP variations and magnet Tc. We have not con-
sidered the variation of initial flux density, which you must obtain from a magnet supplier.
Section 3 - Applications
-400
-300
-200
-100
0
100
200
300
400
-1
-0.75
-0.5    -0.25
0
0.25
0.5
0.75
1
Distance (mm)
Temp = 25
o
C
Temp = 85
o
C
Temp -40
o
C
-400
-300
-200
-100
0
100
200
300
400
-1.5
-1
-0.5
0
0.5
1
1.5
Distance (mm)
Air Gap = 1.5mm @ -40
o
C
Air Gap = 2.5mm @ 80
o
C
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