AS5311-ATST-500: High-Performance Magnetic Rotary Encoder for Precision Applications

The AS5311-ATST-500 from ams is a state-of-the-art magnetic rotary encoder designed to deliver exceptional accuracy and reliability in rotational sensing applications. As part of the Sensors and Transducers category, this active component is revolutionizing industries with its advanced magnetic technology and versatile design. In this comprehensive guide, we explore everything you need to know about this innovative encoder.

AS5311-ATST-500: Technical Specifications and Features

Advanced Magnetic Sensing Technology

The AS5311-ATST-500 employs cutting-edge magnetic sensing that outperforms traditional optical encoders. Unlike optical solutions that can be compromised by environmental factors, this magnetic encoder maintains consistent performance even in challenging conditions with dust, moisture, or temperature variations.

Dual Voltage Operation (3.3V and 5V)

Engineers appreciate the flexibility of this encoder's power requirements. With compatibility for both 3.3V and 5V systems, the AS5311-ATST-500 seamlessly integrates into various electronic designs, from low-power IoT devices to industrial control systems.

PWM Output for Precise Digital Communication

The Pulse Width Modulation (PWM) output ensures accurate digital communication with microcontrollers and processors. This feature enables precise measurement of rotational speed and position, making it ideal for applications requiring high-resolution feedback.

Flexible Magnet Configuration

Unlike integrated solutions, the AS5311-ATST-500 requires an external magnet, allowing engineers to optimize magnetic field characteristics for their specific application. This design flexibility enables customization of sensing distance and alignment for optimal performance.

Robust Surface Mount Design

Featuring surface mount technology (SMT) with SMD tab termination, this encoder supports automated PCB assembly processes. The compact form factor (XXmm XXmm) makes it suitable for space-constrained applications while ensuring reliable electrical connections.

Detailed Performance Characteristics

Parameter	Specification
Resolution	12-bit (4096 positions per revolution)
Operating Temperature	-40 C to +125 C
Output Frequency	Up to 1MHz
Supply Current	6mA typical

Industry-Leading Applications

Industrial Automation Systems

In manufacturing environments, the AS5311-ATST-500 provides reliable position feedback for:

• Servo motor control
• Robotic arm positioning
• Conveyor belt speed monitoring
• CNC machine tool axes

Automotive Innovations

Automotive engineers utilize this encoder for:

• Electronic power steering systems
• Throttle position sensing
• Transmission gear detection
• Wheel speed monitoring

Medical Device Integration

The encoder's precision benefits medical applications including:

• Diagnostic equipment positioning
• Therapeutic device motion control
• Laboratory automation systems

Competitive Advantages

Superior Environmental Resistance

The magnetic sensing principle makes the AS5311-ATST-500 inherently resistant to:

• Dust and particulate contamination
• Humidity and moisture
• Oil and chemical exposure

Long-Term Reliability

With no mechanical contact between sensing elements, the encoder offers:

• Virtually unlimited rotational life
• Minimal wear over time
• Consistent performance throughout product lifecycle

Design Flexibility

Engineers benefit from:

• Customizable magnet placement
• Compact footprint for space-constrained designs
• Compatibility with various microcontroller architectures

Implementation Considerations

PCB Layout Recommendations

For optimal performance:

• Maintain proper grounding techniques
• Keep signal traces short and direct
• Implement appropriate noise filtering

Magnet Selection Guide

Recommended magnet characteristics:

• Diameter: 5-10mm
• Material: NdFeB or SmCo
• Polarization: Axial or diametric
• Air gap: 0.5-2.0mm

Frequently Asked Questions

Q: What is the angular resolution of the AS5311-ATST-500?

A: The encoder provides 12-bit resolution, equivalent to 0.088 per step.

Q: Can this encoder operate in high-vibration environments?

A: Yes, the non-contact magnetic design performs well in vibrating conditions where optical encoders might fail.

Q: Is programming required for basic operation?

A: No, the encoder outputs a standard PWM signal that can be directly interpreted by most microcontrollers.

Why Choose the AS5311-ATST-500?

When compared to competitive solutions, the AS5311-ATST-500 offers:

• Higher reliability in harsh environments
• Greater design flexibility with external magnet configuration
• Lower total cost of ownership due to extended operational life
• Simplified integration with standard digital systems

For engineers developing next-generation motion control systems, the AS5311-ATST-500 represents the ideal combination of precision, durability, and versatility. Its robust design ensures accurate position sensing across countless rotations, while its flexible interface options simplify system integration.

Ready to incorporate this high-performance magnetic rotary encoder into your design? Order your AS5311-ATST-500 today and experience the difference in rotational sensing technology!