OMH3075S

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A magnetic sensor is a device used primarily to detect the presence or absence of a magnetic field or to measure its strength. Magnetic sensors are widely used applications in automotive, industrial, home, and atomic energy industries for monitoring and controlling. In particular, magnetic switches (also called solid-state switches) are frequently used to detect the presence and absence of a magnetic field in a given area. OMH3075S is an example of a magnetic switch, and this article will discuss the application fields and working principle of the device.

Application Field

The OMH3075S magnetic switch is a compact, low cost, long-term reliable solution for detecting the presence of a magnetic field in a variety of applications. The device has been designed to be used in harsh industrial environments, with a wide operating temperature range from -40C to +85C. It has a maximum magnetic field sensing range of 3.5 mTesla and a minimum switching time of 10 mS. Additionally, the device has a low current consumption of only 198uA and a low power operation of 3.7V.

The OMH3075S can be used in any application where magnetic fields are present, such as metering, motors, valves, door locks, security systems, and electronic products. It is perfectly suited for industrial and automotive applications such as fuel level monitoring, exhaust gas recirculation (EGR) valves, actuators, and automation controls. The device can also be used in safety-related applications such as shock and vibration sensors.

Working Principle

The OMH3075S is a Hall effect-based magnetic switch, meaning it utilizes the Hall effect to detect changes in magnetic fields. When a magnetic field is applied to the device, it changes its internal resistance, allowing the device to detect the presence or absence of a magnetic field. The device is capable of detecting both DC and AC magnetic fields, with a sensitivity of up to 3.5 mTesla. The device is capable of being programmed to detect a specific range of magnetic fields via its internal register.

Once the device is triggered by the magnetic field, it sends a digital signal indicating the presence or absence of the magnetic field at its output. The device has two outputs: a low-side open drain output for conventional TTL/CMOS logic and a high-side open drain output for voltage supply detection, providing additional support for 3.3V and 5V logic in the system.

The OMH3075S offers a range of features that make it suitable for use in a variety of applications. Its low power consumption, wide range of magnetic field sensing, and fast response time make it a reliable and cost-effective solution for many industrial applications.

Conclusion

The OMH3075S magnetic switch is an excellent choice for any application requiring the detection and measurement of magnetic fields. Its low power consumption and fast response time make it ideal for use in harsh industrial and automotive environments. The device is capable of detecting both DC and AC magnetic fields, with a sensitivity of up to 3.5 mTesla. Its two outputs and wide operating temperature range make it an ideal choice for any magnetic detection application.

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