Two new TMR-based magnetic angle sensors, the LF53466 and LF53464, were introduced by Littelfuse. They are intended to provide high-precision 0–360° angular measurement in challenging conditions with no thermal drift.
Each sensor has four high-sensitivity detecting components that allow for precise angle detection along the X and Y axes. Both sensors use Tunneling Magnetoresistance (TMR) technology in a dual push-pull Wheatstone bridge arrangement.
These sensors’ improved measurement accuracy, broad supply voltage compatibility, and higher thermal stability make them an appealing substitute for Hall-effect devices.
In the 200–800 Gs magnetic field range, the LF53466 provides precise angle sensing with an inaccuracy of less than 0.8°. It is housed in a conventional TSSOP8 packaging.
It is perfect for contactless potentiometers, steering wheel angle sensors, and pedal position sensors, among other industrial and automotive applications that gain from easier inspection and stronger mechanical solder junctions.
Wider airgap capabilities and compatibility with smaller, lower-cost magnets are made possible by the LF53464, which comes in a compact LGA8L package and delivers even higher accuracy—angle error below 0.6°.
Space-constrained applications including rotary encoders, knob and valve position sensing, and consumer electronics like power tools and appliances are good fits for it.
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.
Leadership Comments
“These new TMR omnipolar sensors significantly expand the Littelfuse magnetic sensing portfolio by opening access to broader industrial, mobility, and consumer markets,” said Julius Venckus, Global Product Manager, Sensors. “The LF53466 and LF53464 enhance applications requiring speed control and precise angle detection by combining high accuracy, thermal resilience, and packaging flexibility.”
Availability
They are available in tape and reel format in quantities of 3000pcs for LF53466 and 4000pcs for LF53464. Sample requests are accepted through authorized Littelfuse distributors worldwide.
For a listing of Littelfuse distributors, CLICK HERE
