Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycles the AR55-AS01, a Broadcom AR55 series intelligent, programmable 32-bit hollow-shaft and linear absolute encoder.
I. AR55-AS01 Product Overview
The AR55-AS01 is a high-end, intelligent, programmable absolute encoder from Broadcom’s AR55 series. Featuring integrated 32-bit ultra-high single-revolution resolution, it innovatively combines the dual functions of hollow-shaft rotational detection and linear displacement detection, making it a high-precision core sensor component for the industrial motion control sector. Based on Broadcom’s proprietary optical sensing and encoding algorithms, this encoder overcomes the limitations of traditional encoders—such as fixed parameters and limited functionality—by supporting user-defined parameter programming and configuration. It enables precise data acquisition for both rotational and linear motion. With its wide temperature range, multi-protocol compatibility and high stability, it is widely suited to high-precision motion control applications such as high-end industrial automation, intelligent robotics, precision testing equipment, aerospace and drones. It represents a superior upgrade over traditional incremental encoders and standard absolute encoders, whilst fully complying with RoHS environmental standards and meeting the requirements of industrial mass production.
II. AR55-AS01 Core Performance Parameters
The AR55-AS01 offers ultra-high precision and strong environmental adaptability as its core advantages, with core hardware and performance parameters ranking among the industry’s best. Specific parameters are as follows:
- Ultra-high resolution: Equipped with a 32-bit single-revolution absolute position encoding architecture, it can output a vast amount of position data per revolution. This offers several times the accuracy of conventional 25-bit encoders, enabling the capture of minute movement deviations at the micrometre level. It perfectly meets the demands of ultra-high-precision positioning and speed measurement, and supports customisation of the CPR within a wide range of up to 2²⁶, making it suitable for control scenarios requiring different levels of precision.
- Operating Voltage Compatibility: Supports dual-mode operating voltages of 3.3V and 5V, enabling direct integration with mainstream industrial control chips such as MCUs and FPGAs. No additional voltage conversion modules are required, simplifying hardware circuit design and reducing equipment development and mass production costs.
- Wide operating temperature range: With an industrial-grade ultra-wide operating temperature range of -40°C to 115°C, it can reliably withstand harsh industrial conditions such as extreme cold, high temperatures and drastic temperature fluctuations. It remains unaffected by interference from complex environments such as outdoor settings, high-temperature workshops and enclosed equipment compartments, whilst maintaining consistent and precise sensing performance.
- Dual detection modes: Integrates both hollow-shaft rotation detection and linear displacement detection functions. It is suitable for detecting the angle, speed and position of hollow-shaft motors and rotary equipment, as well as for capturing linear displacement in linear modules, linear motors and precision slide rails. This dual-purpose design meets motion detection requirements across multiple scenarios.
- Signal output capabilities: Supports dual-channel output of differential sine and cosine analogue signals and digital incremental signals. With strong signal anti-interference capabilities, it is compatible with high-precision closed-loop control algorithms, effectively enhancing the response speed and control accuracy of motion control systems.
III. Key Features of the AR55-AS01 Smart Programmable Core
The standout feature of the AR55-AS01 is its fully programmable parameters, which overcome the limitations of traditional encoders—such as fixed parameters and poor adaptability—and provide considerable flexibility for customised equipment development. The core programmable capabilities are as follows:
- Customisable resolution configuration: Users can freely set the CPR parameter according to actual operating conditions, with an adjustment range covering 1 to 2²⁶. This allows flexible adaptation to different operating modes, such as low-speed high-precision or high-speed standard-precision, enabling iterative upgrades to equipment precision without the need to replace the encoder hardware.
- Programmable zero point and calibration: Equipped with Broadcom’s proprietary local automatic calibration technology, precise calibration can be achieved without requiring the equipment to rotate a full revolution. It supports customisation of parameters such as zero-point offset, counting direction and phase compensation, adapting to different mechanical mounting configurations and effectively resolving detection errors caused by equipment assembly deviations.
- Configurable output modes: Supports seamless switching between analogue and digital output modes. Users can flexibly select between incremental and absolute position signal outputs according to the control system architecture, making it compatible with a wide range of industrial control systems—both new and legacy—and offering exceptional compatibility.
IV. AR55-AS01 Multi-Protocol Communication Capabilities
To accommodate diverse industrial communication architectures, the AR55-AS01 integrates several mainstream industrial communication protocols and supports multi-mode serial communication, enabling seamless integration with various industrial controllers. It offers stable communication, high transmission rates and strong resistance to interference:
- Basic General-Purpose Protocols: Supports the three major industrial communication protocols—SSI, SPI and RS485—covering the communication requirements of the vast majority of standard industrial automation equipment;
- Dedicated High-Speed Protocol: Equipped with the Encoder Serial Link (ESL) protocol, which supports bidirectional high-speed data transmission, enabling real-time reading and writing of encoder parameters, status monitoring and fault feedback;
- High-end industrial protocols: The BiSS-C protocol is available as an option, catering to the high-speed synchronous communication requirements of high-end precision CNC, servo control and intelligent inspection equipment, whilst meeting the real-time data transmission demands of high-precision closed-loop control.
V. AR55-AS01 Hardware Design and Manufacturing Advantages
The AR55-AS01 features an industrial-grade, compact and highly reliable hardware design that balances ease of installation with adaptability to various operating conditions, offering outstanding core manufacturing advantages:
- Hollow-shaft design: A standard through-type hollow-shaft structure compatible with various hollow-shaft servo motors and rotating shaft equipment. It offers easy installation and high coaxiality, effectively reducing mechanical vibration and enhancing motion detection stability, whilst being suitable for axial cable routing and installation in confined spaces.
- Integrated sensing architecture: Combines optical encoding, signal processing, data computation and communication transmission modules into a single unit, eliminating the need for external decoding chips. Its high level of integration and compact size save installation space, making it suitable for the design of high-end equipment characterised by miniaturisation and integration.
- High-Immunity Industrial Design: Optimised for harsh industrial conditions such as electromagnetic interference, vibration and dust. Featuring differential signal transmission and hardware-based electromagnetic shielding, it offers exceptional resistance to vibration and electromagnetic interference, ensuring drift-free and lossless operation over the long term, with stability far exceeding that of standard encoders.
- Maintenance-free, long-term operation: Leveraging Broadcom’s mature optical encoding technology, the encoder features a structure free from mechanical gear wear and is paired with durable, wide-temperature-range components, enabling continuous operation over an exceptionally long service life and significantly reducing subsequent equipment maintenance costs and downtime losses.
VI. Core Technical Advantages of the AR55-AS01
Compared to similar absolute encoders on the market, the AR55-AS01 possesses distinctive core competitive advantages, making it the preferred choice for high-end motion control applications:
- Breakthrough in 32-bit ultra-high precision: Far exceeding the industry standard of 25-bit resolution per revolution, it dramatically enhances position detection accuracy, meeting the demands of ultra-precise motion control at the nanometre and micrometre levels, and is suitable for demanding applications such as high-end machine tools and precision testing instruments.
- Compatibility with both rotational and linear modes: A single unit enables precise detection of both rotational angles and linear displacement, overcoming the limitations of traditional encoders that support only a single measurement mode. This significantly broadens the range of applications whilst reducing the hardware costs and commissioning complexity associated with multi-sensor configurations.
- Intelligent adaptive calibration technology: Eliminates the need for full-revolution calibration and supports online parameter fine-tuning. It adapts to mechanical assembly errors and operational deformation deviations, ensuring sustained detection accuracy whilst lowering the barriers to equipment commissioning and simplifying maintenance.
- Comprehensive compatibility across all scenarios: Featuring a combination of dual voltages, multiple protocols and programmable parameters, it is compatible with both new and legacy industrial control systems, high- and low-speed equipment, and rotational and linear motion mechanisms, covering the vast majority of industrial precision motion control scenarios.
VII. Main Application Scenarios for the AR55-AS01
Thanks to its ultra-high precision, exceptional stability, high programmability and multi-scenario adaptability, the AR55-AS01 is widely used in various high-end precision motion control fields:
- Intelligent equipment sector: high-end precision CNC machine tools, servo motion platforms, linear modules and precision transmission equipment;
- Robotics: industrial robotic arms, collaborative robots, and the joints and locomotion mechanisms of mobile robots;
- Intelligent inspection: high-precision displacement detection instruments, industrial measurement equipment, and precision laboratory calibration equipment;
- Specialised industrial applications: industrial drones, aerospace support equipment, outdoor automation equipment, and specialised equipment for high-temperature operating conditions;
- Automated production lines: high-precision assembly lines, precision sorting equipment, and automated closed-loop control systems.
VIII. AR55-AS01 Product Summary
As the flagship smart programmable absolute encoder in Broadcom’s AR55 series, the AR55-AS01 offers five core advantages: 32-bit ultra-high resolution, dual detection of rotational and linear motion, fully programmable parameters, multi-protocol compatibility, and industrial-grade reliability. It thoroughly addresses the industry pain points associated with traditional encoders, such as insufficient accuracy, fixed parameters, poor adaptability and weak operational stability. With its compact hollow-shaft structure, ultra-wide operating temperature range and maintenance-free design, it is perfectly suited to the motion control requirements of various high-end precision industrial equipment. It provides core sensing support for high-precision positioning, high-speed stable operation, and intelligent commissioning and upgrades, making it a fundamental component for the advancement of industrial automation towards higher precision, intelligence and integration.
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