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參數資料
| 型號： | A3422EKA-TL |
| 元件分類： | 磁阻傳感器 |
| 英文描述： | MAGNETIC FIELD SENSOR-HALL EFFECT, -7.5-7.5mT, 0.21-0.50V, RECTANGULAR, THROUGH HOLE MOUNT |
| 封裝： | SIP-5 |
| 文件頁數： | 10/11頁 |
| 文件大?。?/td> | 1223K |
| 代理商： | A3422EKA-TL |
3421 AND 3422
HALL-EFFECT,
DIRECTION-DETECTION
SENSOR ICS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
APPLICATIONS INFORMATION
Operation with Fine-Pitch Ring Magnets. For
targets with a circular pitch of less than 4mm, a perfor-
mance improvement can be observed by rotating the front
face of the device (see below). This device rotation
decreases the effective element-to-element spacing,
provided that the Hall elements are not rotated beyond the
width of the target.
Applications. It is strongly recommended that an
external 0.01 F bypass capacitor be connected (in close
proximity to the Hall elements) between the supply and
ground of the device to reduce both external noise and
noise generated by the internal logic.
The simplest form of magnet that will operate these
devices is a ring magnet. Other methods of operation,
such as linear magnets, are possible. Extensive applica-
tions information on magnets and Hall-effect devices is
also available in the “Hsall-Effect IC Applications Guide”
which can be found in the latest issue of the Allegro
MicroSystems Electronic Data Book, AMS-702 or Appli-
cation Note 27701, or at
www.allegromicro.com
Dwg. MH-024
α
TARGET FACE WIDTH, F
>1.50 SIN
α (mm)
>0.059 SIN
α (inch)
1.50
COS
α(mm)
0.059
COS
α(inch)
A
0.059"
1.50 mm
1
2
4
5
3
A
1
2
4
5
3
Rotated device for
fine-pitch ring
magnets
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