參數(shù)資料
型號(hào): A1181EUA-T
廠商: Allegro MicroSystems, Inc.
英文描述: Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
中文描述: 敏感雙線現(xiàn)場(chǎng)可編程斬波穩(wěn)定單極霍爾效應(yīng)開關(guān)
文件頁(yè)數(shù): 15/16頁(yè)
文件大小: 356K
代理商: A1181EUA-T
8
A1180-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
Functional Description
B
OP
B
RP
BHYS
ICC(H)
I CC
ICC(L)
Switch
to
Low
Switch
to
High
B+
B–
I+
0
(A) A1180 and A1182
B
OP
B
RP
BHYS
ICC(H)
I CC
ICC(L)
Switch
to
High
Switch
to
Low
B+
I+
B–
0
(B) A1181 and A1183
Operation
The output, ICC, of the A1180 and A1182 devices switch low
after the magnetic eld at the Hall sensor exceeds the oper-
ate point threshold, BOP. When the magnetic eld is reduced to
below the release point threshold, BRP, the device output goes
high. The differences between the magnetic operate and release
point is called the hysteresis of the device, BHYS. This built-
in hysteresis allows clean switching of the output even in the
presence of external mechanical vibration and electrical noise.
The A1181 and A1183 devices switch with opposite polarity for
similar BOP and BRP values, in comparison to the A1180 and
A1183 (see gure 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 eld strength, and the B– direction indicates decreasing south polarity eld strength (including the
case of increasing north polarity).
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