Description | |
The TMR3107 is a contactless, high-precision, and high-speed magnetic rotary encoder sensor, which integrated with tunneling magnetoresistance (TMR) sensors and 17-bit signal processing ASIC, providing options for parameter programming and SPI output. The TMR3107 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 TMR3107 supports 3-wire and 4-wire SPI operation and outputs 17-bit absolute position signal through SPI communication protocol to the MCU. The TMR3107 provides a self-calibration function to compensate non-linearities caused by imperfect installation. The TMR3107 is available in SOP8 package. |  SOP8 |
Features and Benefits | |
 Tunneling magnetoresistance (TMR) technology | Supply voltage: 3.3 V to 5 V |
| Supply current as low as 10 mA | 0° to 360° absolute position sensing |
| Available in SPI interface | Output delay < 2 μs |
| Angular error < ±0.2° | Angular repeatability < ±0.04° |
| Speeds up to 40,000 RPM | Self-calibration available |
| Built-in EEPROM supports 10000+ read/write
cycles | RoHS and REACH compliant |
Applications | |
| Contactless angular position measurement | Brushless motor position sensing |
| Rotary speed sensing | Close loop stepper system |
| Servo encoder | |
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