參數(shù)資料
型號: A1148
廠商: Allegro MicroSystems, Inc.
英文描述: Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
中文描述: 低電流超靈敏雙線斬波穩(wěn)定單極霍爾效應開關
文件頁數(shù): 6/13頁
文件大?。?/td> 319K
代理商: A1148
6
A1147-DS, Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1147 and A1148
Functional Description
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
B–
I+
0
(A) A1147
B
O
B
R
B
HYS
I
CC(H)
I
C
I
CC(L)
S
S
B+
I+
B–
0
(B) A1148
Operation
The output, I
CC
, of the A1147 device switches low after the mag-
netic 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 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 A1148 device
switches with opposite polarity for similar B
OP
and B
RP
values,
in comparison to the A1147 (see figure 1).
Figure 1. Alternative switching behaviors are available in the A114x 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).
相關PDF資料
PDF描述
A1147ELHLT Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1147ELHLT-T Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1147LLHLT-T Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1148LLHLT-T Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
A1147EUATI-T Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
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