AMR Sensor

Glossary

1. Parallel sensingline type /vertical type AMR sensor

Technical document: The principle of operation of the AMR sensor is explained.

2. Equivalent circuit

Represents the equivalent circuit of an AMR sensor. The resistor pattern indicates the direction of extension of the element on the magnetic sensing surface.

3. Input resistance

It represents the resistance value per bridge (between Vcc and GND: in the case of a 2-phase bridge, when both ends are connected in parallel) or per element in no magnetic field.

4. Midpoint potential

It represents the voltage output from Vout (Vout+, Vout-) when 5V is applied between Vcc-GND in no magnetic field.

5. Midpoint potential difference

It represents the difference between the midpoint potential of Vout+ and Vout− when 5V is applied between Vcc-GND in no magnetic field.

6. Output voltage

It represents the amount of change in midpoint potential in a magnetic field under certain conditions.
At our company, the applied voltage is based on 5V. The output voltage is proportional to the applied voltage.

7. Peak-to-peak voltage (mV)

Represents the width of the amplitude of the output voltage. When a rotating magnetic field is applied to an AMR sensor for position detection/rotation detection, it will be twice the output voltage in the case of a half-bridge, and four times the output voltage in the case of a full-bridge.

8. Resistance temperature characteristics

(RT2 – RT1) ∕ {RT1 (T2 – T1)} x 100 (%/°C)

RT1: Resistance value (Ω) at T1 (°C)

RT2: Resistance value (Ω) at T2 (°C)

9. Midpoint potential temperature drift

We use the following two types of notation depending on the difference in notation method.

9-1．

Midpoint potential temperature drift

Vd：Drift amount（μV） at Vcc（V）

9-2．

Midpoint potential temperature drift

Drift amount when Vcc = 5V and the operating ambient temperature of each product is substituted for T1 and T2 in formula (A)

10. Output voltage temperature characteristics

(V T2 – V T1) / {V T1 (T2 – T1)} x 100 (%/°C)

V T1: Output voltage (V) at T1 (°C)

V T2: Output voltage (V) at T2 (°C)

11. Magnetic Field Unit

Magnetic field (H) 1kA/m = 12.5 Oe

Since the magnetic permeability (μ) is about 1 in the atmosphere,

From B = μH, the relationship with the magnetic flux density (B) is 1 Oe ≒ 0.1mT.

12. Magnetization pitch (λ)

It represents the distance from the center of the N pole to the center of the S pole in a magnet magnetized with multiple poles.

Support

Reference materials

Sample request/Documents request/Inquiry

HOME AMR SensorGlossary

keyword

Search for sensors by related keywords

#what Pressure sensorA pressure sensor in the medium pressure range that uses the semiconductor piezo effect. The lineup includes abundant pressure range and SMD type of small package They are characterized by high breakdown voltage compared to other companies. What is the pressure sensor？
#what AMR sensorA sensor that uses the magnetoresistive effect of a ferromagnetic material to change the resistance value according to the strength of the magnetic field. It has sensitivity in low magnetic fields, a wide operating temperature range, and excellent frequency characteristics.　You can use it in harsh environments where optical systems cannot. What is the AMR sensor?
#magnetic sensorA sensor that uses the magnetoresistive effect of a ferromagnetic material to change the resistance value according to the strength of the magnetic field. It has sensitivity in low magnetic fields, a wide operating temperature range, and excellent frequency characteristics.　You can use it in harsh environments where optical systems cannot. Magnetic sensor
#magnetic switchOur AMR sensor can use for magnetic switch (proximity switch). We will introduce how it works and how to use it. Sensor for magnetic switch Application examples
#water heatersOur water level sensor is installed on water heaters, can detect water level and water pressure of tap water, hot water. Equipped with a semiconductor pressure sensor, it has excellent linearity and reproducibility. Sensor for water heaters.
#water level sensorsDeveloped for detecting the water level of water heaters, this sensor can detect water level and water pressure of tap water, hot water, etc. Equipped with a semiconductor pressure sensor, it has excellent linearity and reproducibility. Water lever sensor
#water meterBy intermittently driving the sensor, it can be used for low current consumption applications such as battery-mounted flowmeters. Water mater
#potentiometerOne of the application of the AMR sensor that can detect 360°is Potentiometer. We will introduce how to use and how to detect as potentiometer. Sensor for potentiometer
#encoderOur AMR sensor can use for various encoders. Sensor for rotary encoder Sensor for linear encoder Application examples
#chip mounterWe will introduce the examples of our pressure sensor. Sensor for chip mounter Application examples
#blood pressure monitorOur pressure sensor is used for medical equipment required low noise. Sensor for blood pressure gauges Application examples
#360°detectionWe have a lineup of the AMR sensor that can detect 360°detection by mounting bias magnet. AMR sensor for 360°detection Application examples
#gear detectionWe have a lineup of gear sensors using TMR sensors.
#how to use AMR sensorWe will introduce one of the examples of how to use magnetic sensor. （Application examples）
#how to use Pressure sensorWe will introduce one of the examples of how to use pressure sensor. （Application examples）

Pressure
Unit conversion tool Magnetic Field
Unit conversion tool