Littelfuse, Inc. announced the launch of two new TMR-based magnetic angle sensors - the LF53466 and LF53464 - designed to deliver high-precision 0–360° angular measurement in harsh environments with minimal thermal drift.
Both sensors utilize Tunneling Magnetoresistance (TMR) technology in a dual push-pull Wheatstone bridge configuration, each featuring four high-sensitivity sensing elements, which enable accurate angle detection along the X and Y axes. These sensors offer a compelling alternative to Hall-effect devices by providing superior thermal stability, wide supply voltage compatibility, and enhanced measurement precision.
The LF53466, housed in a standard TSSOP8 package, offers precision angle sensing with an error of less than 0.8° in the 200–800 Gs magnetic field range. It is ideal for industrial and automotive applications that benefit from stronger mechanical solder joints and ease of inspection – such as steering wheel angle sensors, pedal position sensors, and contactless potentiometers.
The LF53464, available in a compact LGA8L package, achieves even greater accuracy – angle error below 0.6° – while enabling wider airgap capability and compatibility with smaller, lower-cost magnets. It is well-suited for space-constrained applications such as rotary encoders, knob and valve position sensing, and consumer devices including power tools and appliances.
Key features and benefits
- 0–360° angle measurement with X-Y axis sensing
- TMR technology for enhanced magnetic sensitivity
- Low angle error: <0.8° (LF53466TMR), <0.6° (LF53464TMR)
- Excellent thermal drift compensation for stable performance
- Wide supply voltage range for system design flexibility
- Differential output for robust signal integrity
- Two package options: TSSOP8 (LF53466-08TMR) for ease of assembly; LGA8L (LF53464-08TMR) for miniaturized designs
Target markets and applications
- Industrial Automation & Robotics – Rotary position sensors, absolute angle detection, and robotic arm or joystick control for factory equipment and intelligent machinery.
- Mobility and Off-Highway Vehicles – Steering angle, pedal position, and motor control in e-bikes, 2/3-wheelers, and construction or off-road EVs.
- Consumer and Smart Devices – Compact sensing in power tools, smart thermostats, and appliances, including knob and valve position sensing for intuitive user interfaces.
- Precision Control Systems – High-resolution rotary encoders, contactless potentiometers, and angle sensors used across motor feedback, valve actuation, and HMI (human-machine interface) applications.