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參數(shù)資料
| 型號： | A1351LKTTN-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 663K |
| 描述： | IC SENSOR HALL EFFECT 4-SIP |
| 產(chǎn)品培訓模塊： | Current Sensor |
| 標準包裝： | 1 |
| 傳感范圍： | 0.055% ~ 0.095% DC/G |
| 類型： | 線性 - 單極，雙極 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電流 - 電源： | 10mA |
| 電流 - 輸出（最大）： | 1mA |
| 輸出類型： | 數(shù)字，推挽式 |
| 特點： | 高精度 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 4-SIP |
| 供應(yīng)商設(shè)備封裝： | 4-SIP |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 1139 (CN2011-ZH PDF) |
| 其它名稱： | 620-1228-6 |
A1351
High Precision Linear Hall Effect Sensor IC
with a Push/Pull, Pulse Width Modulated Output
22
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
The flux density measured by the A1351 SIP is related to the
size of the gap cut into the core. The larger the gap in the core,
the smaller the flux density per ampere of applied current (see
figure 8).
Figure 9 depicts the magnetic flux density through the center of
the SIP as a function of SIP to core alignment. Note that a core
with a larger cross-sectional area would reduce the attenuation
in flux density that results from any SIP misalignment. The flat
portion of the curve in figure 9 would span a larger distance in
millimeters if the cross-sectional area of the core were increased.
Wire
+B
mm
2
2
0
Ring concentrator
Magnetic flux in gap
Measurement plane
(midplane of gap)
Figure 9. Side view of example current-conducting wire and split ring concentrator (left), and
magnetic pro le (right) through the midplane of the gap in the split ring concentrator. The ux
denisty through the center of the gap varies between the inside and the outside of the gap.
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.0
Radial Displacement from Concentrator Centerline (mm)
Interior side of
Concentrator
Exterior side of
Concentrator
1.0
1.0
2.0
0
Figure 8. The flux density per ampere measured by the A1351 Hall device
is related to the core gap, as shown. This figure assumes that the current
sensing application is constructed using the example setup.
lux Densit er Am ere vs. Ga for a Feedthrou h Sensor
0
2
4
6
8
10
12
14
0.5
1
1.5
2
2.5
3
3.5
a mm
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