Description

The TMR3102 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 TMR3102 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.

TMR3102P outputs 12-bit absolute position signal

through SPI communication protocol. At the same

time, it is able to output analog and PWM signals,

with rotational speed up to 20,000 RPM.

Features and Benefits

••Tunneling magnetoresistance (TMR) technology

••Contactless measurement

••Available in Analog and PWM interfaces output

••12-bit absolute position output in SPI mode

••Programmable zero position

••Angular repeatability < ±0.2°

••Speeds up to 20,000 RPM

••Adaptive supply voltage: 3.3 V to 5 V

Applications

••Contactless angular position measurement

••Brushless motor position sensing

••Rotary speed sensing

••Rotary angular sensing