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TMR4101 - High Precision Analog Magnetic Scale Sensor

The TMR4101 magnetic scale sensor contains two push-pull half-bridges, each consisting of two high-sensitivity tunnel magnetoresistance (TMR) elements. The layout of the TMR elements matches the width of the magnetic poles. When the sensor moves along the length of the scale, the sensor outputs two quadrature sine wave signals, each corresponding to the width of a pair of magnetic poles. By decoding these two sine wave signals, the relative displacement between the chip and the scale can be accurately measured.

The TMR4101 magnetic scale sensor chip uses a small package DFN4L (1.32 mm × 0.66 mm × 0.3 mm), which reduces the requirements for chip installation, making the structural design of the system more flexible and convenient for assembly in narrow spaces.



  • Tunneling magnetoresistance (TMR) technology
  • Analog voltage outputs for A and B phases
  • High sensitivity
  • Detects magnetic pole pitch of 0.4 mm
  • Wide operating voltage range
  • Allows for larger air gap
  • Good temperature stability
  • RoHS & REACH compliant



  • Camera Autofocus System
  • Magnetic scale and magnetic encoder
  • Gear motion speed and direction detection
  • Linear and angular velocity sensing
  • Linear and curved displacement measurement


Original price $1.13 - Original price $1.13
Original price
$1.13 - $1.13
Current price $1.13
About MDT

About MDT

MultiDimension Technology Co., LTD., (MDT) is a magnetic sensor manufacturer founded in 2010 in Zhangjiagang, Jiangsu, China. With over 400 patents, more than 200 magnetic sensor products, and its advanced volume production fab for TMR/GMR/AMR magnetic sensors, MDT can provide a number of high-performance magnetic sensors to meet the diverse application requirements of its customers.
Led by a core management team of elite experts and veterans in magnetic sensor technology and engineering services, MDT is committed to supporting its customers with high-quality and comprehensive services.

Learn more about MDT

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