參數(shù)資料
型號： A1180LUA-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)場可編程斬波穩(wěn)定單極霍爾效應(yīng)開關(guān)
文件頁數(shù)： 8/16頁
文件大小： 356K
代理商： A1180LUA-T
8
A1180-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
Functional Description
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
B–
I+
0
(A) A1180 and A1182
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
I+
B–
0
(B) A1181 and A1183
Operation
The output, I
CC
, of the A1180 and A1182 devices switch low
after the magnetic
fi
eld at the Hall sensor exceeds the oper-
ate point threshold, B
OP
. When the magnetic
fi
eld is reduced to
below the release point threshold, B
RP
, the device output goes
high. The differences 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 A1181 and A1183 devices switch with opposite polarity for
similar B
OP
and B
RP
values, in comparison to the A1180 and
A1183 (see
fi
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
fi
eld strength, and the B– direction indicates decreasing south polarity
fi
eld strength (including the
case of increasing north polarity).
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