Murata Manufacturing Begins Mass Production of Ultra-Low Power AMR Sensors
Murata Manufacturing has announced the development and mass production of two new ultra-low current consumption AMR sensors, the MRMS166R and MRMS168R. These advanced sensors are specifically designed to meet the growing demands of healthcare and wearable devices, where energy efficiency, compact size, and reliable performance are critical. With the introduction of these products, Murata is reinforcing its leadership in electronic components by addressing the challenges associated with miniaturization and low-power operation. The MRMS166R, in particular, stands out as a breakthrough innovation, achieving an industry-first combination of ultra-low current consumption and low-voltage operation, setting a new benchmark for AMR sensor technology.
Breakthrough Performance with MRMS166R
The MRMS166R represents a significant advancement in sensor technology, delivering an average current consumption of just 20 nanoamperes while operating at a low voltage of 1.2 volts. This combination makes it the first AMR sensor in the world to achieve such performance levels, according to Murata’s research as of April 2026. The ability to operate at such low power levels is particularly important for devices that rely on small batteries, such as coin cells, which have limited capacity. By minimizing energy consumption, the MRMS166R enables devices to function for extended periods without frequent battery replacement. This innovation is especially valuable in applications where long-term reliability and minimal maintenance are essential, such as medical and wearable technologies.
Key Features Enhancing Efficiency and Design
The new AMR sensors incorporate several features that enhance both performance and usability. One of the most notable is their significantly reduced current consumption, which allows devices to operate efficiently even with limited power resources. The MRMS166R’s ability to function at a supply voltage as low as 1.2 volts ensures stable operation in environments where power availability is constrained. In addition to its energy efficiency, the sensor is housed in a compact package measuring just 1.0 by 1.0 millimeters, making it ideal for integration into small and lightweight devices. This combination of low power consumption, low-voltage operation, and compact size makes the MRMS166R a versatile solution for modern electronic applications.
Expanding the Lineup with MRMS168R
In addition to the MRMS166R, Murata has introduced the MRMS168R, a sensor designed for applications requiring higher voltage operation. With an average current consumption of 80 nanoamperes and support for 3-volt systems, the MRMS168R provides flexibility for developers working on a variety of devices. By offering multiple options within its AMR sensor lineup, Murata enables customers to select the most suitable solution for their specific requirements. This expanded portfolio reflects the company’s commitment to meeting diverse market needs while maintaining high standards of performance and reliability.
Applications Across Healthcare and Wearable Devices
The new AMR sensors are particularly well-suited for use in healthcare and wearable devices, where space and power constraints are critical considerations. In healthcare applications, they can be used in devices such as capsule endoscopes, medical patches, and continuous glucose monitoring systems. These applications require sensors that can operate reliably over long periods while consuming minimal power. In the wearable technology sector, the sensors are ideal for devices such as augmented reality glasses and wireless earphones, where compact size and energy efficiency are essential. Additionally, the sensors can be used in security-related applications, including smart locks and door detection systems, demonstrating their versatility across multiple industries.
Understanding AMR Sensor Technology
AMR, or anisotropic magnetoresistance, sensors are magnetic sensors that detect the position and movement of objects without physical contact. When combined with a magnet, these sensors can identify changes in magnetic fields, enabling them to perform functions such as detecting proximity or movement. One common application is the sleep and wake function in electronic devices, where the sensor detects the presence or absence of a magnet to switch the device between standby and active states. For example, when a device equipped with an AMR sensor is brought close to a magnet, it can automatically enter sleep mode, conserving energy. When the magnet is removed, the device resumes active operation. This functionality is widely used in portable electronics and contributes to improved energy efficiency and user convenience.
Addressing the Challenges of Miniaturization
In recent years, the trend toward smaller and more portable devices has placed increasing pressure on component manufacturers to deliver solutions that are both compact and energy-efficient. Coin batteries, which are commonly used in healthcare and wearable devices, have limited capacity and are typically disposable. As a result, reducing the power consumption of electronic components is essential for extending battery life and minimizing the need for replacements. The MRMS166R addresses this challenge by significantly reducing standby power consumption, enabling devices to operate for more than two years on a single coin cell battery. This capability is particularly important for medical devices, where reliability and longevity are critical factors.
Supporting Low-Voltage Operation Requirements
Another key challenge in modern electronics is the need for components that can operate at low voltages. Many healthcare devices use silver oxide coin batteries, which typically provide a voltage of around 1.55 volts. To ensure compatibility with these power sources, electronic components must be capable of functioning at lower voltages. The MRMS166R meets this requirement by supporting operation at voltages as low as 1.2 volts, ensuring stable performance even in low-power environments. This capability enhances the versatility of the sensor and makes it suitable for a wide range of applications where power efficiency is a priority.
Compact Design for Space-Constrained Devices
The compact size of the MRMS166R and MRMS168R sensors is another key advantage, particularly for applications where space is limited. Measuring just 1.0 by 1.0 by 0.4 millimeters, these sensors can be easily integrated into small devices without compromising performance. This miniaturization supports the development of innovative products that are both lightweight and portable, meeting the demands of modern consumers. By reducing the footprint of its components, Murata is enabling manufacturers to design more compact and efficient devices, further advancing the field of electronics.
Technical Specifications and Performance Metrics
The MRMS166R operates within a voltage range of 1.2 to 3.6 volts, with a typical operating voltage of 1.5 volts, and delivers an average current consumption of 20 nanoamperes. It also provides a maximum output current of 1 milliampere. The MRMS168R, on the other hand, operates within a voltage range of 2.0 to 3.6 volts, with a typical voltage of 3.0 volts, and has an average current consumption of 80 nanoamperes, along with a higher maximum output current of 12 milliamperes. These specifications highlight the versatility and performance capabilities of the sensors, making them suitable for a wide range of applications.
Showcasing Innovation at Industry Events
Murata plans to exhibit these new AMR sensors at Medtec Japan 2026, which will be held from April 21 to 23, 2026, at Tokyo Big Sight. This event provides an opportunity for industry professionals to explore the latest advancements in medical device technology and gain insights into Murata’s innovative solutions. By participating in such events, the company aims to demonstrate the practical applications of its products and engage with customers and partners in the healthcare and electronics industries.
Commitment to Innovation and Sustainability
Murata’s development of ultra-low power AMR sensors reflects its broader commitment to innovation and sustainability. By reducing energy consumption and extending the operating life of electronic devices, the company is contributing to the creation of more sustainable technologies. Longer battery life not only enhances user convenience but also reduces waste, supporting environmental goals. As the demand for IoT devices continues to grow, the need for energy-efficient components will become increasingly important. Murata’s ongoing efforts to improve its sensor technology and expand its product lineup position it as a key player in the advancement of the electronics industry.
About Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd. is a global leader in the development, production, and sale of electronic components, particularly those based on ceramic technologies. The company leverages its expertise in materials development, process innovation, product design, and production technology to create cutting-edge solutions that drive progress in the electronics industry. Through its commitment to quality and innovation, Murata continues to contribute to the advancement of technology and the development of a more connected and sustainable world.
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