Analog Devices Introduces Magnetic Angle Sensor with High Precision, Speed and Resolution

Analog Devices, Inc. introduced today the industry’s highest precision, highest speed magnetic angle sensor. The high-resolution ADA4571 sensor is four times more accurate (0.5° max), 60 percent faster and uses 40 percent less power than competing angle sensors.

Analog Devices' Magnetic Angle Sensor Technology Delivers Industry's Highest Performance for Precision DC Motor Controls ADI's ADA4571 sensor directly measures the shaft position in brushless DC motors, reducing noise and optimizing motor smoothness and torque in automotive and industrial applications. (Photo: Business Wire)

The ADA4571 directly measures motor position to reduce noise, optimize smoothness and torque performance, and help designers of brushless DC (BLDC) motors meet tighter environmental, noise and energy requirements. The new sensor is automotive qualified and integrates a custom mixed-signal signal conditioning IC and sensing element based on Anisotropic Magneto-Resistive (AMR) technology. The new sensor enables direct, non-contact and wear-free angle measurement in a range of motor applications, including automotive systems such as electric power-assisted steering, braking, active suspension and stability control.

The integrated AMR and precision signal conditioning technology allows the ADA4571 to operate independently of magnet drifts due to lifetime, thermal influences or mechanical stress, which enables high-accuracy readouts in harsh environments.

High accuracy position feedback information enables more effective commutation of the motor and better control of torque and speed performance especially in low RPM applications. The new sensor also enables high-speed motor operation up to 50,000 RPM while the direct angle measurement principle reduces the effects of vibration and noise that can degrade motor performance. Better torque control improves motor efficiency, lowers emissions and heat and extends operating life. Additionally, the low phase delay (2µs) enables fast closed loop control and improves responsiveness in high-dynamic applications such as industrial servo motors, robotics and electric power steering.

The ADA5471 runs on a 2.7- to 5.5-V supply, consumes just 6.5 mA of power, and includes a low-power sleep mode that expands application usage to remotely powered systems. Additionally, the sensor does not get damaged under high magnetic field conditions and has negligible hysteresis; while the low temperature and lifetime drift performance reduces or eliminates the need for calibration. The sensor also supports advanced diagnostics for use in high availability and safety critical applications.

ADA4571 Magnetic Angle Sensor Key Features

  • Low angular error: 0.5° max
  • High speed: 50,000 RPM with a 2µs phase delay
  • Low noise: 500 uVrms
  • Low power: 6.5 mA
  • -40°C to 150°C operation

Pricing and Availability

  • Product - ADA4571
  • Availability - Now
  • Price Each Per 10K - $1.98
  • Packaging - 8-lead SO

Source: http://www.analog.com/

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Analog Devices, Inc.. (2019, February 24). Analog Devices Introduces Magnetic Angle Sensor with High Precision, Speed and Resolution. AZoSensors. Retrieved on October 24, 2020 from https://www.azosensors.com/news.aspx?newsID=8717.

  • MLA

    Analog Devices, Inc.. "Analog Devices Introduces Magnetic Angle Sensor with High Precision, Speed and Resolution". AZoSensors. 24 October 2020. <https://www.azosensors.com/news.aspx?newsID=8717>.

  • Chicago

    Analog Devices, Inc.. "Analog Devices Introduces Magnetic Angle Sensor with High Precision, Speed and Resolution". AZoSensors. https://www.azosensors.com/news.aspx?newsID=8717. (accessed October 24, 2020).

  • Harvard

    Analog Devices, Inc.. 2019. Analog Devices Introduces Magnetic Angle Sensor with High Precision, Speed and Resolution. AZoSensors, viewed 24 October 2020, https://www.azosensors.com/news.aspx?newsID=8717.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Submit