These hall-effect sensors accurately track extremely small changes in magnetic flux density- Changes generally too small to operate hall-effect switches. As motion detectors, gear tooth sensors, and proximity detectors, they are magnetically driven mirrors of mechanical events. As sensitive monitors of electromagnets, they can effectively measure a system's performance with negligible system loading while providing isolation from contaminated and electrically noisy environments. Each hall-effect integrated circuit includes a hall sensing element, linear amplifier, and emitter-follower output stage. Problems associated with handling tiny analog signals are minimized by having the hall cell and amplifier on a single chip. Three package styles provide a magnetically optimized package for most applications.
Features
Extremely sensitive
Flat response to 23kHz
Low-noise output
4.5V to 6V operation
Magnetically optimized package
Typical application
Motion detector
Gear tooth sensors
Proximity detector
Velocity detecting of motor bicycle
Current detecting sensor.
Linear Hall Effect IC |
Model |
Package |
VCC(V) |
ICC(mA) |
VO(V) |
Sensitivity (mV/mT) |
Linear range (mT) |
| Min. |
Typ. |
Max. |
Min. |
Max. |
| AH3503 |
TO92, SOT 89, SOT 23-3L |
4.5-6 |
<12 |
2.25-2.75 |
19.5 |
22.0 |
25.5 |
-100 |
100 |
| AH3505(AH49E) |
2.3-2.7 |
12.5 |
17.0 |
20.5 |
-90 |
90 |
| AH3506(AH496B) |
4.5-10.5 |
<10 |
2.35-2.65 |
24.5 |
28.0 |
31.5 |
-85 |
85 |
| Note 1: Unit is mV / mT, the sensor sensitivity is a reference only when it's in the linear region. When the strength of measured magnetic field exceeds the linear range, the magnetic field strength and voltage values can't be given. |
| Note 2: Quiescent output voltage is at room temperature, when Vcc = 5V measured. |
| Note 3: Unit is Millitesla, 1 mT=10 Gs. In actual use, we suggest that the working magnetic field of sensor should smaller than the range given in the table. |
| Note 4: Re M-type (SOT23-3L) products, its working magnetic field is subject to N pole. |
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