TMR3109 23-bit TMR Magnetic Rotary Encoder
  • TMR3109-big
Part No.: TMR3109
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: < ±0.05°
Output: SPI
Package: SOP8
Lead Time: In stock


The TMR3109 is a contactless, high-precision, and high-speed magnetic rotary encoder sensor, which integrated with tunneling magnetoresistance (TMR) sensors and CMOS digital signal processing circuitry.

The TMR3109 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 TMR3109 supports 3-wire and 4-wire SPI working modes, allowing the client MCU to read 23-bit absolute position information through the SPI protocol.

Auto-calibration is available for the TMR3109 to compensate non-linearities caused by imperfect installation.


Features and Benefits

iconTunneling magnetoresistance (TMR) technologyiconSupply voltage: 3.3 V to 5 V
iconSupports 0° to 360° absolute angle detectioniconSupply current: 10 mA (typical)
iconOn and off axis measurementsiconAvailable in SPI interface
iconAngular output delay < 2 μsiconAngular repeatability < ±0.05°
iconSpeeds up to 40,000 RPMiconAuto-calibration function
icon Integrated automatic gain calibration functioniconRoHS and REACH compliant


iconContactless angular position measurementiconBrushless motor position sensing
iconRotary speed sensingiconClose loop stepper system
iconServo 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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