MDT Unveils TMR1370 Sensor to Extend CGM Battery Life

The TMR1370 expands the company’s existing sensor lineup, building on the architecture of previous models like the TMR1367 and TMR1369. By utilizing proprietary Tunneling Magnetoresistance technology, the device achieves a typical power draw of 30nA at a 3V supply. This reduction in energy consumption is critical for medical wearables, where battery capacity must be preserved for active monitoring cycles after the device has been stored on a shelf.

Designed for integration into compact systems, the switch operates within a 1.8V to 4.0V range and features a maximum operating point below 40 Gauss. The sensor is housed in a miniature 1.6×1.6×0.5mm DFN5L package, allowing for thinner, lighter medical devices. System designers can now choose between X-axis and Z-axis configurations to better suit various mechanical layouts. Samples are currently available for purchase through DigiKey and the manufacturer's website.