Broadcom AS33-M42M series

Full magnetic energy harvesting multi-turn absolute encoder module

The AS33-M42M series encoder is a 42-bit absolute magnetic encoder comprising 18-bit single-turn (ST), and 24-bit multi-turn (MT) counts by Broadcom Inc. This encoder's design features state-of-the-art energy harvesting multi-turn technology that converts the rotating magnetic field into electrical energy, which powers the revolution tracking circuit, regardless of the encoder rotation speed and direction. Therefore, there is no revolution count loss, even in the absence of an external power supply. The AS33-M42M series encoders do not require periodic maintenance of the battery backup components, preventing the associated downtime.

 

Key features

• Single and multi-turn magnetic encoder family with compact size
• No battery backup required, maintenance-free
• High robustness and immunity againtst contaminants
• Wide operating temperature and RPM range

 

Additional features

• High position accuracy single-turn magnetic counter
• Patented energy harvesting technology multi-turn counter
• Total 42-bit resolution with 18-bit single-turn and 24-bit multi-turn
• Compact size:
  • Overall encoder outer diameter: 33 mm
  • Maximum height: 20 mm
• Built-in communication protocol (optional):
  • Standard SSI (2 MHz)
  • BiSS-C (10 MHz)
  • RS-485 half-duplex (2.5/5/10 Mbps)
• Built-in temperature sensor
• Operating temperature range:
  • From -40 °C to 115 °C.
• Robust magnetic system:
  • Highly immune against contaminants
• RoHS compliant

 

Applications

• Servo motor
• Robotic engineering and automation
• Factory and automotive automation
• Specialized equipment

 

Additional Info

The AS33-M42M series encoder has a built-in communication protocol, which is supported by a full-duplex or half-duplex line transmission drive, offering good noise immunity for more robust transmission of data in SSI/BiSS-C/RS485 protocol up to 10 Mbps in harsh industrial applications. To improve system integrity and simplicity, a single magnetic solution is responsible for both ST and MT position generation. Being a magnetic technology-based encoder, it features high robustness and immunity against contamination such as dust and fingerprints on the sensing element. As a result, it requires less stringent control in production handling and harsh environments.

 

Available tools

Accuracy calibration is required to achieve the specified accuracy performance. 

• Calibration Kit & Alignment Tools Ordering Information: 
  • AS33-M42-023 - Radial Centering Jig for the M3 Mounting option
  • AS33-M42-024 - Radial Centering Jig for the M4 Mounting option
  • AS33-M42-010 - Electronic Accuracy Calibration Kit for AS33-M42M Encoder Modules
  • AS33-AC18 - Accuracy Calibration Station for 18-bit AS33-M42M Encoder
  • AS33-C150 - AS33-M42M Mating Cable Connector 150 mm in length

ebv content library/npi/2021/broadcom-as33-m42m Broadcom AS33-M42M Series Absolute Encoder Module | EBV Elektronik