Data Sheet AS33-M42M Series 42-bit Full Magnetic Energy Harvesting Multi-Turn Absolute Encoder Module technology-based encoder is robust against contamination Description such as dust and finger print on the sensing element. As a The Broadcom AS33-M42M series is an 18-bit single-turn result, it requires less stringent control in production (ST) absolute magnetic encoder with a 24-bit energy handling and harsh environment. harvesting multi-turn (MT) counter. Hence, the encoder Features solution has a combined 42-bit absolute resolution. Design of the encoder features state-of-the-art energy harvesting Patented Energy Harvesting technology MT technology and angular magnetic hall sensing with Total 42-bit resolution with 18-bit single-turn and 24-bit sophisticated signal conditioning algorithms. A single multi-turn magnetic solution is thus responsible for both the ST and Low angular accuracy error of <0.1 MT positions generation which greatly improves overall Overall encoder outer diameter 33 mm and maximum feedback system integrity and simplicity. height of 20 mm The key advantage of AS33-M42M series encoder is the Built-in communication protocol (options): patented energy-harvesting technology for revolution SSI (2 MHz) tracking. This technology converts rotating magnetic field BiSS-C (10 MHz) into electrical energy, which powers the revolution tracking RS-485 half-duplex (2.5/5.0/10 MB/s) circuit. The beauty of energy harvesting technology is that Built-in temperature sensor the same amount of energy is generated independent of Operating temperature range 40C to 115C encoder rotation speed and direction. The generated energy is sufficient to power up the MT counter circuitry. Applications Therefore, there is no loss of revolution count even in the Small motors and linear actuators absence of external power supply. On the other hand, when Robotic automation and engineering comparing to battery backed up MT counting, this technology does not require periodic maintenance of the Drone and automated guide vehicles battery backup components and the down time associated DC and AC servo motors with it. Field servicing of the servo motor systems can then Test and measurement equipment be minimized, which reduces the overall system cost over NOTE: The Broadcom encoder is not recommended for the service life of the system. use in life critical applications for example, ABS The AS33-M42M series encoder has a built-in braking systems, power steering, life support, and communication protocol, which is supported by a full-duplex critical care systems and medical equipment. or half-duplex line transmissions drive, offering good noise Contact sales representative if more clarification is immunity for a robust transmission of data up to 10 Mb/s needed. even in harsh industrial applications. This magnetic Broadcom AS33-M42M-DS100 September 11, 2020AS33-M42M Series Data Sheet 42-bit Full Magnetic Energy Harvesting Multi-Turn Absolute Encoder Module Product Specifications Table 1: Absolute Maximum Ratings a Parameters Symbol Min. Typ. Max. Units Remark Supply Voltage VDD 0.3 15 V Operating Temperature T 40 115 C J StorageTemperature T 40 115 C S b Permissible Speed 12,000 rpm Note a. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Stresses greater than the absolute maximum ratings may cause permanent damage to the device. b. The encoder works reliably up until this permissible speed. Recommended Operating Conditions Table 2: Electrical Specification Over T = 25C A Parameters Conditions Min. Typ. Max. Units Remark Supply Voltage 4.5 5.5 V AS33-M42M-x5x 7 12.5 V AS33-M42M-x7x Supply Current Without load 55 65 mA AS33-M42M-x5x 45 55 mA AS33-M42M-x7x System Accuracy With electrical 0.087 Degree a, b correction a. Under recommended magnetic shielding enclosure and calibration at ambient 25C. Any wear and tear condition that might affect total indicated runout of motor shaft will cause encoder accuracy drift. b. System accuracy measurement is conducted with direct mounting. Table 3: Mechanical Specifications Parameters Conditions Min. Typ. Max. Units Remark Axial Misalignment 0.2 mm Radial Misalignment 0.2 mm Vibration Per IEC 60068-2-6 10G 10~2000 Hz Shock Per IEC 60068-2-27 200G 6 ms Half Sine Table 4: Environmental Specifications Parameters Conditions Min. Typ. Max. Units Remark Relative Air Humidity T = 60C 90 RH% Non-condensing A Electrostatic Discharge Per IEC 61000-4-2 4 kV Module level Broadcom AS33-M42M-DS100 2