MT6701 High-speed And High-precision Magnetic Encoder Module

MT6701 High-speed And High-precision Magnetic Encoder Module delivers exceptional angular position sensing through advanced differential Hall induction technology. This compact breakout board utilizes the high-performance MagnTek MT6701 sensor IC to measure full 0° to 360° rotation with 14-bit digital resolution. Consequently, it provides a robust, contactless alternative to fragile optical encoders in demanding industrial and hobbyist environments. Furthermore, the module supports multiple output interfaces including incremental ABZ, UVW, I2C, SSI, and ratiometric analog or PWM signals. Therefore, developers can easily integrate it into brushless motor feedback loops, robotic joints, and custom human-machine interfaces without complex protocol translation.

Key Features:

• High Precision Sensing: Features a 14-bit digital core that resolves minute angular shifts with minimal propagation delay.
• Versatile Output Options: Provides concurrent I2C, SSI, incremental ABZ, UVW, and analog or PWM absolute angle outputs.
• Contactless Operation: Utilizes magnetic induction to eliminate mechanical wear, ensuring high reliability over millions of rotations.
• Push-Button Functionality: Includes a dedicated Z-axis air gap detection output that enables integrated rotary-plus-push control schemes.
• Wide Speed Capability: Operates reliably at rotation speeds up to 55,000 RPM without losing tracking accuracy.

Technical Specifications:

• Sensor IC: MagnTek MT6701 Hall-based Magnetic Encoder
• Operating Voltage: 3.3V to 5.0V DC
• Resolution: 14-bit absolute digital / 12-bit analog/PWM
• Angular Range: 0° to 360° full rotation
• Max Rotation Speed: 55,000 RPM
• Operating Temperature: -40°C to +125°C
• Current Consumption: ≈ 14 mA

Mechanical Specifications:

• Board Substrate: High-grade FR4 double-sided glass epoxy PCB
• Magnet Requirements: Diametrically magnetized cylindrical neodymium magnet (Ø6 mm × 2.5 mm recommended)
• Air Gap Tolerance: 0.5 mm to 2.0 mm distance from IC surface
• Mounting Provisions: Standard corner mounting holes for secure chassis attachment

Dimensions:

• Module Length: ≈ 23.0 mm
• Module Width: ≈ 23.0 mm
• Pin Pitch: 2.54 mm standard grid spacing
• Weight: ≈ 2.0 g

Pinout and Wiring:

• VDD: Power supply input, connect to 3.3V or 5V DC.
• GND: Common ground connection.
• SCL / A / U: Clock line for I2C, or phase A / phase U incremental signal.
• SDA / B / V: Data line for I2C, or phase B / phase V incremental signal.
• Z / W: Index pulse output or phase W signal.
• PWM / Analog: Ratiometric analog voltage or pulse-width modulation output.
• Push: Z-axis air gap proximity output for switch detection.
• Note: However, verify your specific wiring configuration against your chosen output mode to prevent signal contention.

Datasheet Reference:

• Download MagnTek MT6701 Datasheet

Commonly Used in:

• Robotic Joint Feedback: Tracking precise arm and leg articulation angles in multi-axis robots.
• BLDC Motor Commutation: Providing commutation signals for brushless direct current motors.
• Control Panels: Building heavy-duty industrial rotary knobs with integrated push functions.

Applications:

• CNC Machine Calibration: Monitoring spindle orientation and lead screw positioning.
• Gimbal Stabilization: Providing absolute angular feedback for camera and sensor stabilization gimbals.
• Automotive Human-Machine Interfaces: Implementing robust dashboard dials and selector switches.

Equivalent Models:

• AS5600: A popular 12-bit magnetic encoder with I2C and analog outputs, although it lacks the higher 14-bit resolution and multi-protocol flexibility of the MT6701.
• MA730: A high-speed contactless magnetic angle encoder featuring fast refresh rates.
• AS5048A: A high-resolution magnetic position sensor designed for demanding automotive and industrial applications.

Package Includes:

• 1 x MT6701 High-speed And High-precision Magnetic Encoder Module
• 1 x Diametrically Magnetized Neodymium Target Magnet