MDT Launches TMR3111D Sensor for High-Speed Robotic Motion Control
Engineers designing humanoid robots and industrial servo systems now have a more resilient option for position feedback. MultiDimension Technology has unveiled the TMR3111D, a rotary encoder IC that leverages tunneling magnetoresistance to maintain precision at speeds reaching 40,000 rpm, outperforming traditional Hall-effect alternatives in noisy environments.
The TMR3111D is engineered to provide mechanical versatility by supporting both on-axis and off-axis configurations. By utilizing MDT’s proprietary TMR technology, the sensor achieves a superior signal-to-noise ratio and increased tolerance to mechanical variations. These features are critical for modern collaborative robots and precision actuators that require high repeatability under dynamic operating conditions.
Integration is streamlined through the chip’s support for multiple output interfaces, including SPI, ABZ, PWM, and UVW. The device also features integrated automatic gain compensation and nonlinear calibration, which actively correct installation-induced magnetic errors. Housed in a compact 3x3x0.75mm DFN10L package, the encoder is designed to fit into space-constrained robotic joints while providing 23-bit internal data resolution. The company plans to demonstrate the technology at Electronica Shanghai 2026.
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