TMR3108 17-bit High-speed TMR Magnetic Rotary Encoder
  • TMR3108-big
Part No.: TMR3108
Type: Digital Series
Supply Voltage(V): 3.3 to 5
Angle Measurement(°): 360°
Resistance(kΩ): /
PP (mV/V): /
Field Operating Range(Gs): 200 to 800
Angular Error: < ±0.2°
Package: TSSOP16
Lead Time: In stock


The TMR3108 is a contactless, high-precision, and high-speed magnetic rotary encoder sensor that integrates tunnel magnetoresistance (TMR) sensors and 17-bit signal processing ASIC. It provides options for parameter programming and various output options.

The TMR3108 senses the single pole-pair magnet rotation above the chip by TMR sensors; collects the rotating magnetic field signal; transmits it to the digital processing unit, and calculates the rotation angle. The TMR3108 supports 3-wire and 4-wire SPI operation and outputs 17-bit absolute position signal through SPI communication protocol to the MCU. It also offers a 12-bit PWM output that can be programmed to four PWM frequency.

The TMR3108 provides incremental ABZ output supporting up to 4096 lines. Parameters including A/B phase direction, Z pulse width and positions can also be programmed. The TMR3108 also has UVW output for up to 32 pole-pairs. 

The TMR3108 offers a self-calibration function to compensate non-linearities caused by imperfect installation. The TMR3108 is available in TSSOP16 package.


Features and Benefits

iconTunneling magnetoresistance (TMR) technologyicon0° to 360° absolute position sensing
iconAvailable in SPI, ABZ differential, UVW, Analog, PWM interfacesiconSupply current as low as 10 mA (typ.)
icon Programmable A/B interpolation factors from ×1 to ×4096icon Programmable Z pulse width: 1 to 16384 LSB
iconProgrammable inverted UVW output resolution in 1 to 32 pole-pairiconAngular error < ±0.2°
iconOutput delay < 2 μsiconAngular repeatability < ±0.04°
iconSpeeds up to 40,000 RPMiconAdaptable voltage range: 3.3 V to 5 V
iconBuilt-in EEPROM supports 10000+ read/write cyclesiconSelf-calibration available
iconRoHS and REACH compliant


iconContactless angular position measurementiconBrushless motor position sensing
iconRotary speed sensingiconClose loop stepper system
iconStepper encoder
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The information provided herein by MultiDimension Technology Co., Ltd. (MDT) is believed to be accurate and reliable. The technology disclosed by MDT does not infringe the patents of other companies and owns independent intellectual property rights. We reserve the right to change the specification of products and/or the information given herein at any time to improve product quality, reliability and functionality. MDT does not assume any liability arising out of the application and use of its products.

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