HomeElectronics NewsNew ProductsTMR Digital Magnetic Sensor for Battery Operated Applications

TMR Digital Magnetic Sensor for Battery Operated Applications

  • Coto Technology’s TMR sensor enables better power optimisation in space constrained devices such as wearables and implantable devices
  • Can perform ‘wake up’ or ‘turn on’ functions

Coto Technology, a provider of relays for switching and magnetic sensing solutions has released the new RedRock RR122-1A22-511 / 512 wafer-based TMR (Tunneling Magnetoresistance) digital omnipolar sensor.

The RR122-1A22 TMR sensor features an operating frequency of 10 Hz, a voltage supply range of +1.7V to +5.5V and an extremely strong magnetic sensitivity (9 G or 0.9 mT). With a low current drain (75 nA) for an active magnetic sensor, the RR122-1A22 Series TMR sensor is suited for performing the ‘wake up’ or ‘turn on’ function for battery operated and power-sensitive applications.

The operating temperature range is from -40 degrees Celsius up to +85 degrees Celsius. An upgraded version providing high temperatures of up to +125 degrees Celsius is also present.

The Coto Technology RedRock® RR122-1A22-511 / 512 TMR Digital Magnetic Sensor is available through Coto’s distributors in either a tiny 1.4 x1.4x.45mm LGA-4 device package or an industry standard SOT-23-3 package. The device fits well into space-constrained applications such as insulin management, ingestible and implantable devices that all need to be hermetically sealed.


Vinay Prabhakar Minj
Vinay Prabhakar Minj
Vinay Prabhakar Minj is a technology writer and science communication specialist with a Master’s degree in Communication of Science and Innovation (Science Communication). He is a prolific contributor to Electronics For You, where he has authored over 1,000 articles covering electronics, semiconductors, embedded systems, IoT, and emerging technologies. With a strong foundation in science communication, Vinay focuses on translating complex engineering concepts into clear, accessible, and application-oriented content. His work spans topics such as sensor technologies, chip design, wireless systems, and next-generation electronics, making advanced innovations easier to understand for engineers, students, and industry professionals. Through his extensive contributions, he has built a reputation for delivering reliable, well-researched, and practical insights that help readers stay updated with the rapidly evolving electronics ecosystem. His writing bridges the gap between technical depth and real-world usability, supporting both learning and decision-making in the field.

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