AS5600 Encoder Magnetic Induction Angle Sensor

AS5600 Encoder Magnetic Induction Angle Sensor is a high-resolution, contact-less rotational magnetic encoder designed to measure absolute angular position over a full 360° range. This magnetic induction sensor employs Hall-effect technology, offering exceptional robustness against external contaminants such as dirt, dust, and moisture that typically degrade optical or mechanical encoders. The AS5600 offers both high-speed digital outputs (I²C and PWM) and an analog output. Consequently, it provides unparalleled flexibility for integration into various microcontrollers and control systems without needing complex signal conditioning. Engineers therefore select the AS5600 when designing highly reliable, space-constrained position-sensing applications, providing precision and durability across demanding operational environments.

Key Features:

• Contactless Sensing: The AS5600 utilizes a diametrically magnetized magnet rotating above the chip, eliminating mechanical wear and maximizing the product’s lifespan.
• High Resolution Output: This sensor provides a maximum resolution of 4096 positions per revolution (12-bit), allowing for extremely precise angle measurements.
• Zero Position Programmability: Users can program the zero-position (start position) directly into the sensor’s non-volatile memory via the I²C interface, simplifying calibration.
• Multiple Output Modes: Features I²C digital, 12-bit PWM, and Analog outputs, allowing designers to select the best interface for their system architecture.
• Integrated AGC: An integrated Automatic Gain Control (AGC) compensates for variations in magnetic field strength and magnet alignment, ensuring consistent accuracy.

Technical Specifications:

• Maximum Resolution: 12 bits (4096 steps per revolution)
• Angular Range: 0° to 360° absolute measurement
• Operating Voltage (V_DD): 3.3 V or 5.0 V (Device dependent, often 3.3V)
• Output Interface: I²C, PWM, and Analog Voltage (0% to 100% of V_DD)
• Maximum Magnetic Field Strength: 7 mT (Nominal)
• Operating Temperature Range: −40°C to +125°C
• Maximum Rotation Speed: ≈ 14500 rpm

Mechanical Specifications:

• Package Type: SOIC-8 (typically sold on a small breakout board)
• Required Magnet: Diametrically magnetized, generally 6 mm diameter with 2.5 mm thickness.
• Magnet Air Gap: Typically 0.5 mm to 3.0 mm (Distance between magnet surface and sensor surface).
• Durability: Highly resistant to environmental contaminants due to contactless design.

Dimensions:

• Breakout Board Dimensions: Varies by manufacturer, typically ≈ 23 mm x 23 mm
• AS5600 Chip Size (SOIC-8): ≈ 5.0 mm x 4.0 mm
• Mounting Holes: Common boards feature two or four mounting holes (e.g., M2 size).
• Weight: Extremely lightweight, typically ≤ 2 grams (including breakout board).

Pinout and Wiring:

• VCC (Power): Connect to the 3.3V or 5V power supply.
• GND (Ground): Connect to the system ground (0 V).
• SDA / PUSH (Data/Output): Acts as the I²C Data line or the Push-button input for zero-position setting.
• SCL / PWM (Clock/Output): Acts as the I²C Clock line or the PWM output pin.
• OUT (Analog Output): Provides a voltage proportional to the measured angle (0 to V_DD).
• DIR (Direction): Selects the direction of rotation (High or Low).
• Wiring Note: Ensure the magnetic axis of the magnet aligns perfectly with the center of the AS5600 chip for optimal accuracy and repeatability.

Datasheet Reference:

• Download ams AS5600 Magnetic Rotary Encoder Datasheet

Commonly Used in:

• Robotics and Motor Control: Provides high-precision feedback for servo motors, joints, and robotic manipulators.
• Gimbals and Drones: Used for precise camera angle stabilization and motor positioning.
• Industrial Encoders: Used for upgrading or replacing traditional optical or mechanical encoders in industrial automation.

Applications:

• Non-Contact Potentiometers: Functions as a durable, non-wearing replacement for mechanical potentiometers in volume controls or user interfaces.
• Absolute Position Sensing: Determines the precise rotational position of a shaft in medical equipment, actuators, and flow meters.
• Electronic Handwheels: Provides high-resolution input for CNC machinery and manual pulse generators (MPG).

Equivalent Models:

• AS5048A/B (ams): A higher-resolution (14-bit) magnetic encoder with SPI/I²C/PWM outputs, often chosen when higher precision is mandatory.
• MLX90316 (Melexis): A triaxis Hall-effect sensor offering absolute rotary and linear position sensing, providing similar functional capability.
• TLE5012B (Infineon): Another robust magnetic angle sensor offering high-speed angular measurement with SPI and other digital interfaces.

Package Includes:

• 1 x AS5600 Encoder Magnetic Induction Angle Sensor (Breakout Board Module)