A1185_06 ALLEGRO [Allegro MicroSystems], A1185_06 Datasheet - Page 6

• Manufacturer Part Number: A1185_06
• Description: Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall-Effect Switches
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A1185
A1186
Operation
The output, I
field at the Hall sensor exceeds the operate point threshold, B
When the magnetic field is reduced to below the release point
threshold, B
between the magnetic operate and release point is called the
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).
RP
CC
and
, the device output goes high. The differences
, of the A1185 switches low after the magnetic
I+
0
B–
(A) A1185
B
HYS
Chopper-Stabilized Unipolar Hall Effect Switches
Ultrasensitive Two-Wire Field-Programmable
B+
I
I
CC(H)
Functional Description
CC(L)
OP
.
hysteresis of the device, B
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
in comparison to the A1185 (see figure 1).
I+
0
B–
HYS
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
(B) A1186
. This built-in hysteresis allows
B
HYS
OP
B+
and B
I
I
CC(H)
CC(L)
RP
values,
6