参数资料
型号: A1185LLHLT-T
厂商: Allegro Microsystems Inc
文件页数: 7/15页
文件大小: 509K
描述: IC SWITCH HALL EFFECT UNI SOT-23
标准包装: 3,000
传感范围: 10G ~ 60G 跳闸 - 可编程,固定释放
类型: 单极开关
电源电压: 3.5 V ~ 24 V
电流 - 电源: 6.9mA
输出类型: 数字,开路集电极
特点: 可编程
工作温度: -40°C ~ 150°C
封装/外壳: SOT-23W
供应商设备封装: SOT-23W
包装: 带卷 (TR)
Ultrasensitive Two-Wire Field-Programmable
Chopper-Stabilized Unipolar Hall Effect Switches
A1185 and
A1186
6
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Functional Description
B
HYS
I
CC(H)
I
CC(L)
B+
B
I+
0
(A) A1185
B
HYS
I
CC(H)
I
CC(L)
B+
I+
B
0
(B) A1186
The output, I
CC
, of the A1185 switches low after the magnetic
field at the Hall element exceeds the operate point threshold,
B
OP
. When the magnetic field is reduced to below the release
point threshold, B
RP
, the device output goes high. The differ-
ences between the magnetic operate and release point is called
the hysteresis of the device, B
HYS
. This built-in hysteresis allows
clean switching of the output even in the presence of external
mechanical vibration and electrical noise. The A1186 device
switches with opposite polarity for similar B
OP
 and B
RP
 values,
in comparison to the A1185 (see figure 1).
Figure 1. Alternative switching behaviors are available in the A118x device family. On the horizontal axis, the B+ direction indicates
increasing south polarity magnetic field strength, and the B direction indicates decreasing south polarity field strength (including the
case of increasing north polarity).
Operation
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