MultiDimension Technology Co., Ltd. 17-bit High-speed TMR Magnetic Rotary Encoder TMR3108

The TMR3108 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 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. TMR3108 outputs 17-bit absolute position signal through SPI communication protocol. At the same time, it is able to output A/B phase programmable incremental position signal with 1 to 4096 pulse and programmable zero-point (Z phase) signal. TMR3108 also provides inverted UVW output, PWM signals, with rotational speed up to 40,000 RPM. The TMR3108 integrates an EEPROM that allow repeated parameter read/write cycles. In addition, the TMR3108 can self-calibrate to compensate non-linearities caused by imperfect installation.