a3210ex Allegro MicroSystems, Inc., a3210ex Datasheet - Page 7

• Manufacturer Part Number: a3210ex
• Description: Micropower, Ultra-sensitive Hall-effect Switches
• Manufacturer: Allegro MicroSystems, Inc.

Applications. Allegro's pole-independent sensing technique
allows for operation with either a north pole or south pole
magnet orientation, enhancing the manufacturability of the
device. The state-of-the-art technology provides the same
output polarity for either pole face.
tor be connected (in close proximity to the Hall element) between
the supply and ground of the device to reduce both external
noise and noise generated by the chopper-stabilization tech-
nique. This is especially true due to the relatively high imped-
ance of battery supplies.
is a bar magnet with either pole near the branded surface of the
device. Many other methods of operation are possible. Exten-
sive applications information on magnets and Hall-effect
devices is also available in the Allegro Electronic Data Book
AMS-702 or Application Note 27701, or at
www.allegromicro.com
MAX
It is strongly recommended that an external bypass capaci-
The simplest form of magnet that will operate these devices
5 V
0
-B
B OPN
www.allegromicro.com
X
B RPN
MAGNETIC FLUX
OUTPUT OFF
0
10 pF
B RPS
0.1 µF
B OPS
OUTPUT ON
OUTPUT
SUPPLY
(3 V BATTERY)
Dwg. GH-043-1
Dwg. EH-013-2
+B
ACTIVE AREA DEPTH
ACTIVE AREA DEPTH
HALL-EFFECT SWITCHES
BRANDED
SURFACE
0.0195"
0.50 mm
NOM
ELEMENT LOCATIONS
Package Designator ‘UA’
Package Designator ‘LH’
0.011"
0.28 mm
NOM
Allegro
ULTRA-SENSITIVE
A
A
1
1
3209
MICROPOWER,
2
2.06 mm
3
0.081"
1.49 mm
0.059"
3
AND
2
Dwg. MH-011-11A
1.45 mm
0.057"
Dwg. MH-025
0.038"
0.96 mm
3210
7