DESCRIPTION

· The ADA4570 is an anisotropic magnetoresistive (AMR) sensor with integrated signal conditioning amplifiers and ADC drivers.

· It produces two differential analog outputs indicating the angular position of the surrounding magnetic field.

· The sensor contains two Wheatstone bridges at a 45° relative angle, generating sinusoidal outputs for a complete rotation of a dipole magnet.

· The output voltage range is ratiometric to the supply voltage, and the sensor is available in an 8-lead SOIC package.

FEATURES

· Contactless angular measurement with high precision of ±0.1°.

· Low output noise of 850 μV rms and negligible hysteresis.

· Sine and cosine differential outputs, compatible with SAR or Σ-Δ ADC.

· Temperature compensated AMR bridge, EMI resistant, and fault diagnostics.

· Operates in industrial (−40°C to +125°C) and automotive (−40°C to +150°C) temperature ranges.

· Minimal phase error of 0.85° at 30,000 rpm, AEC-Q100 qualified for automotive applications.

· Single chip solution with VDD from 2.7 V to 5.5 V.

APPLICATIONS

· Absolute position measurement (linear and angle).

· Brushless DC motor control and positioning.

· Actuator control and positioning.

· Contactless angular measurement and detection.

· Magnetic angular position sensing.