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Equivalent
Circuit |
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 Equivalent Circuit |
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The sensor
circuit has a series or bridge-type structure, depending on its usage.
In principle, the elements form one circuit on a single chip. |
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| <Series Circuit (with
two elements)> |
<Bridge-type Circuit
(with four elements)> |
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| MR:
Magnetoresistive element |
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| Combination of Elements with Magnet |
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The sensor
circuit is configured with a combination of elements and a permanent
magnet.
A bias-type sensor circuit can be used to detect magnetic media
movement. Applications include magnetic pattern recognition sensors and
rotation sensors.
A motion type sensor circuit can be used for linear or rotational
potentiometers. Applications include angle sensors. |
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| <Bias type> |
<Motion type> |
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| Formula for Calculating the Sensor Output Voltage |
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| Output Voltage / Temperature Characteristic |
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The output
voltage/temperature characteristic depends on the carrier
mobility/temperature characteristic. Therefore, the temperature
coefficient is lower than that for the resistance/temperature
characteristic by one digit. |
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| <Output
Voltage / Temperature Characteristic> |
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- 100% corresponds to the resistance obtained at 25°C.
- The temperature coefficient is approx. -0.4%/°C.
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