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參數(shù)資料
| 型號(hào)： | A3503 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | RATIOMETRIC, LINEAR HALL-EFFECT SENSORS |
| 中文描述： | 比例，線性霍爾效應(yīng)傳感器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 150K |
| 代理商： | A3503 |
3503
RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
GEAR TOOTH SENSOR
CURRENT MONITOR
OPERATION
The output null voltage (B = 0 G) is nominally one-half the supply
voltage. A south magnetic pole, presented to the branded face of the Hall-
effect sensor will drive the output higher than the null voltage level. A north
magnetic pole will drive the output below the null level.
In operation, instantaneous and proportional output-voltage levels are
dependent on magnetic flux density at the most sensitive area of the device.
Greatest sensitivity is obtained with a supply voltage of 6 V, but at the cost of
increased supply current and a slight loss of output symmetry. The sensor's
output is usually capacitively coupled to an amplifier that boosts the output
above the millivolt level.
In two applications shown, a permanent bias magnet is attached with
epoxy glue to the back of the epoxy package. The presence of ferrous material
at the face of the package acts as a flux concentrator.
The south pole of a magnet is attached to the back of the package if the
Hall-effect IC is to sense the presence of ferrous material. The north pole of a
magnet is attached to the back surface if the integrated circuit is to sense the
absence of ferrous matrial.
Calibrated linear Hall devices, which can be used to determine the actual
flux density presented to the sensor in a particular application, are available.
SUFFIX “LT”
SUFFIX “UA”
Dwg. A-12,513
Dwg. A-12,512
N
3
1
2
NOTCH SENSOR
Dwg. A-12,574
SENSOR LOCATIONS
SUFFIX “U”
A
1
3
Dwg. MH-002-5D
0.0165"
0.42 mm
NOM
0.072"
1.83 mm
BRANDED
SURFACE
ACTIVE AREA DEPTH
2
0.093"
2.37 mm
0.042"
1.08 mm
1
3
2
Dwg. MH-008-9A
0.0305"
0.775 mm
NOM
ACTIVE AREA DEPTH
0.091"
2.32 mm
A
1
3
Dwg. MH-011-3D
0.0195"
0.50 mm
NOM
BRANDED
SURFACE
ACTIVE AREA DEPTH
2
0.056"
1.43 mm
A
0.084"
2.13 mm
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