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參數(shù)資料
| 型號： | A1185LLHLT-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches |
| 中文描述： | 超靈敏雙線現(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)： | 6/14頁 |
| 文件大?。?/td> | 318K |
| 代理商： | A1185LLHLT-T |
6
A1185-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1185 and A1186
Functional Description
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
B–
I+
0
(A) A1185
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
I+
B–
0
(B) A1186
The output, I
CC
, of the A1185 switches low after the magnetic
field at the Hall sensor 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 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 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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