Overview
MultiDimension Technology (MDT) has announced volume production of two ultra-compact TMR linear sensors—the TMR2531 and TMR2539—designed for optical image stabilization (OIS) in smartphone cameras. The sensors, unveiled at Sensors Converge 2026, reduce the OIS module footprint by 40% while increasing closed-loop control bandwidth to 12 kHz, a critical spec for next-generation cameras targeting 8K60 video and computational zoom.
What the sensors do
Both sensors measure displacement in the micrometer range within voice-coil motor (VCM) modules. They use a Wheatstone full-bridge circuit with four low-noise TMR elements to detect magnetic field amplitude perpendicular to the Z-axis. This allows VCM driver ICs to correct camera shake in real time during photo and video capture.
Key specifications:
- TMR2531: linear range of ±1000 Gauss
- TMR2539: extended linear range of ±1500 Gauss
- In-plane magnetic field immunity: shielding capability at ±3000 Gauss for stable operation in noisy VCM environments
- Supply voltage range: 1.0 V to 5.5 V
- Package: ultra-compact DFN4L, 0.8 × 0.5 × 0.25 mm
Why it matters for smartphone cameras
The rise of periscope-style telephoto lenses has pushed OIS precision requirements into the micrometer range, particularly for prism positioning over extended travel distances. MDT's TMR technology offers higher signal-to-noise ratio (SNR), larger linear measurement ranges, and stronger immunity to magnetic interference compared to traditional Hall-effect sensors.
The TMR2531 and TMR2539 complement MDT's existing AF TMR sensor series (TMR4101 and TMR301X), forming a complete TMR-based solution for smartphone autofocus and OIS with micrometer precision.
Production and supply chain
MDT operates a vertically integrated TMR sensor fab in Zhangjiagang, Suzhou, China, with an annual production capacity of several billion units. Development, manufacturing, packaging, and testing all occur in-house, which the company says ensures volume supply for the global consumer electronics market.
Additional products at Sensors Converge 2026
MDT also demonstrated at the show:
- Gaming controllers and keyboards with linear TMR sensors
- Angular TMR sensors
- The TMR8105 picoTesla weak-field detector
- The HF2905 1.6-MHz broadband TMR current probe
- TMR encoder solutions for humanoid robotics
Bottom line
MDT's TMR2531 and TMR2539 sensors represent a practical shift from Hall-effect to tunnel-magnetoresistance in smartphone camera stabilization. With billion-unit fab capacity already online, the transition is now a supply-chain reality rather than a future possibility. For OEMs designing next-generation camera modules, these sensors offer a drop-in path to higher precision and smaller footprints.