سنسور و مبدل سنسور موقعیت اندازه‌گیری زاویه و موقعیت خطی

Product Attributes

Introduction

The MagnTek rotary position sensor MT6815 is an IC based on advanced AMR magnetic sensing technology. A rotating magnetic field in the x-y sensor plane delivers two sinusoidal output signals indicating the angle (α) between the sensor and the magnetic field direction. Within a homogeneous field in the x-y plane, the output signals are relatively independent of the physical placement in the z direction.

The sensor is only sensitive to the magnetic field direction as the sensing element output is specially designed to be independent from the magnet field strength. This allows the device to be less sensitive to magnet variations, stray magnetic fields, air gap changes and off-axis misalignment.

The incremental ABZ output mode is available in this sensor series, making the chip suitable to replace various optical encoders. The maximum resolution is 2048 pulse/8192 steps per revolution in binary mode and 2500 pulse/10000 steps per revolution in decimal mode.

A standard I²C or SPI (3-Wire or 4-Wrie) interface allows a host microcontroller to read the 14-bit absolute angle position data from MT6815. The absolute angle position is also provided as PWM output or linear analog signal proportional to VDD from a 12 bit DAC.

Features

• Based on advanced AMR Sensing Technology with 0°~360° Full Range Angle Sensing
• Contactless Angle Measurement Independent Output Interface: I²C, SPI, Analog, ABZ, PWM and UVW
• Incremental ABZ programmable binary and decimal pulse-counts: 32, 48, 64, 128, 256, 512, 1024, 2048, 100, 200, 500, 1000, 2000, 2500 pulses per cycle
• 14 bit Core Resolution
• 12 bit DAC/PWM Resolution
• User Programmable Resolution & Zero Index Position
• RoHS Compliant 2011/65/EU
• SOP-8 or QFN-16 Package

Applications

• Absolute Linear Position Sensor
• BLDC Motor Control
• Robotics Control
• Contactless Potentiometer
• Power Tools