A3210-UA 데이터 시트보기 (PDF) - Allegro MicroSystems
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A3210-UA Datasheet PDF : 12 Pages
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3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
5V
MAX
B OPN
OUTPUT OFF
B OPS
SENSOR LOCATIONS
(±0.005” [0.13 mm] die placement)
BRPN
BRPS
OUTPUT ON
0
-B
0
+B
MAGNETIC FLUX
Dwg. GH-043-1
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.
It is strongly recommended that an external bypass capaci-
tor be connected (in close proximity to the Hall sensor) 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.
The simplest form of magnet that will operate these devices
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
sensors is also available in the Allegro Electronic Data Book
AMS-702 or Application Note 27701, or at
www.allegromicro.com
10 pF
OUTPUT
Package Designator ‘LH’
ACTIVE AREA DEPTH
0.011"
0.28 mm
NOM
0.059"
1.49 mm
3
0.038"
0.96 mm
A
1
2
Dwg. MH-025
Package Designators ‘UA’, UA-LC', and ‘UA-TL’
ACTIVE AREA DEPTH
0.018"
0.46 mm
NOM
A
BRANDED
SURFACE 1
0.081"
2.06 mm
0.057"
1.45 mm
2
3
Dwg. MH-011-11
Although sensor location is accurate to three sigma for a
particular design, product improvements may result in small
changes to sensor location.
0.1 µF
SUPPLY
(3 V BATTERY)
Dwg. EH-013-2
Allegro
115 Northeast Cutoff, Box 15036
8
Worcester, Massachusetts 01615-0036 (508) 853-5000
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