ADA4570 Anisotropic Magnetoresistive (AMR) Sensors

ADA4570 Anisotropic Magnetoresistive (AMR) Sensors


Analog Devices’ integrated AMR angle sensor and signal conditioner with differential outputs

ADI’s ADA4570 is an AMR sensor with integrated signal conditioning amplifiers and ADC drivers. It produces four analog outputs that indicate the angular position of the surrounding magnetic field. The ADA4570 consists of two die within one package, an AMR sensor, and a fixed gain instrumentation amplifier. It delivers clean and amplified differential cosine and sine output signals related to the angle of a rotating magnetic field. The output voltage range is radiometric to the supply voltage.


  • Boost and dual buck synchronous controllers allow all outputs to remain in regulation during automotive restart or cold crank
  • VIN range of 4.5 V to 40 V and operates down to 1 V after startup
  • Low 14 µA operating quiescent current extends the battery run time during a standby condition

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