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° angle, delivering amplified differential cosine and sine output signals.

· 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 (180° range).

· Typical angular error of ±0.1° and low output noise of 850 μV rms.

· Sine and cosine differential outputs with negligible hysteresis.

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

· Operates with VDD from 2.7 V to 5.5 V and minimal phase error of 0.85° at 30,000 rpm.

· Industrial and automotive temperature ranges: −40°C to +125°C and −40°C to +150°C, respectively.

· AEC-Q100 qualified for automotive applications and SAR or Σ-Δ ADC compatible.

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.