MDT Releases TMR Magnetic Angle Sensors for Rotary Encoders
TMR Sensor Technology Enhances New Magnetic Angle Sensors with High Precision and Robust Signal Output
 

Multi Dimension Technology, a leading supplier of magnetic sensors specialising in Tunnelling Magneto Resistance (TMR) technology, has announced two magnetic angle sensors, the MMA153F and MMA253F. These sensors are ideally suited to a wide spectrum of industrial sensor applications, including rotary encoders, speed sensors, contactless potentiometers, and rotary position controllers for brushless DC motors (BLDC).

Designed with MDT’s unique TMR sensor technology and intellectual property, the MMA153F and MMA253F TMR magnetic angle sensors feature 360-degree angle measurement, high-amplitude robust output signals and large air-gap tolerance. MDT’s TMR magnetic angle sensors lower the complexity of the signal processing circuitry.

Dr. Song Xue, Chairman and CEO of Multi Dimension Technology explains :-
“We are passionate about offering all the benefits of TMR sensor technology to our customers with multiple service options to best suit their needs. In addition to supplying TMR magnetic sensor chips, we are open to delivering entire system solutions upon request. We can custom-design TMR sensor wafers for high-volume customers to integrate with their own ASIC technology.”

Dr. Xue also noted that MDT’s new TMR magnetic angle sensors reduce the overall system cost of rotary encoders because of their lower power, high precision, and large stable output signals. They provide a simple solution to integrate with analogue or digital circuitry.

MDT’s TMR sensor technology combines the key benefits of existing magnetic sensor technologies such as AMR (Anisotropic Magneto Resistance), GMR (Giant Magneto Resistance), and Hall Effect, while overcoming their limitations, such as low signal sensitivity (Hall, AMR, and GMR), and design complexity for 360-degree measurement (AMR).

Key Features

• 360-degree measurement with dual-axis SINE/COSINE outputs (MMA253F)

• Single-axis 180-degree measurement (MMA153F)

• Large output signal above 90 percent of supply voltage, eliminating the need for amplification

• Very-low power consumption at 7 microamperes under 1V supply

• High precision (1-degree angular position error) and fine resolution (12-bit with custom circuitry)

• Large air-gap tolerance permitting greater versatility and choice of implementations

• Small LGA8 or SOP8 package

The MMA253F/MMA153F TMR magnetic sensors are immediately available for sampling. An evaluation toolkit, the MMA253F-EVL, is also available for users to assess the electrical and magnetic characteristics of the MMA253F sensor. The MMA253F-EVL toolkit provides an LCD display, a USB interface, and 12-bit digital outputs that can be used in absolute or incremental rotary encoders.

Multi Dimension Technology was founded in 2010 in Zhangjiagang, Jiangsu Province, China, with branch offices in Shanghai and San Jose, California, USA. MDT has developed a unique intellectual property portfolio, and state-of-the-art manufacturing capabilities that can support volume production of high-performance, low-cost TMR sensors to satisfy the most demanding application needs. Led by its core management team of elite experts and veterans in magnetic sensor technology and engineering services, MDT is committed to creating added value for its customers and ensuring their success.

Products related to this article

Below are the products related to this article - select a link to view the particular product page.

MMA153F
TMR technology, Large output signal without amplification, Compatible with wide range of supply voltages, High resistance for low power consumption, Wide airgap tolerance, Excellent thermal stability, Very low hysteresis, SOP8 package Tunneling Magneto Resistive Angular Sensor

MMA253F
TMR technology, Large output signal without amplification, Compatible with wide range of supply voltages, High resistance for low power consumption, Wide airgap tolerance, Excellent thermal stability, Very low hysteresis, LGA8 package Tunneling Magneto Resistive Angular Sensor