Analog Devices' ADA4571 integrates AMR angular magnetic sensors and signal conditioners. The ADA4571 consists of an anisotropic magnetoresistive sensor and a fixed gain instrumentation amplifier. It is one of the industry's most accurate and fastest magnetic angle sensors. Increased by 60% and power efficiency increased by 40%.
The ADA4571 is designed to measure the motor shaft position in brushless DC motors, which reduces noise and increases torque while meeting new and more stringent environmental, noise and energy requirements.
The ADA4571 provides direct, non-contact and wear-free angle measurement with a maximum low angle error of 0.5 degrees. Position feedback loops enable more effective torque and speed control in various brushless DC motor control applications. The ADA4571 supports high-speed motor operation up to 50,000 RPM, and the right-angle measurement of the sensor helps reduce vibration and noise that can degrade DC motor performance. In harsh applications such as industrial servo motors, factory robots, and electric power steering, the 2μs low phase delay and torque control of the ADA4571 provides fast closed-loop response, which improves efficiency, reduces emissions, and reduces heat, thereby extending use. life. System life.
The combination of integrated AMR and ADI's precision signal conditioning technology enables the ADA4571 to maintain high accuracy in noisy environments. The low temperature and lifetime drift performance of the sensor eliminates the need for calibration. The ADA4571 operates over a 40C to + 150C temperature range, requires a 2.7V to 5.5V power supply, and consumes only 6.5 mA. Sleep mode is useful in low-power applications, and the sensor also supports advanced diagnostics for safety-critical applications.
The ADI ADA4571 is available in an 8-lead SOIC package and is ideal for industrial applications that require linear and angular absolute position measurement, including brushless DC motor control and positioning, actuator control and positioning, non-contact angle measurement and detection, and magnetic angle. Position sensing.
