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Magnetoresistive Angle Measurement (CN0323)

The circuit shown in Figure 1 provides a contactless, AMR (anisotropic magnetoresistive) angle measurement solution with 1° angular accuracy over a 180° range. The circuit is ideal for applications where high speed, accurate, non-contact angle measurements are critical.


The circuit provides all necessary signal conditioning including instrumentation amplifiers, buffers, and a dual channel ADC that efficiently process the AMR sensor low level bridge outputs.


The result is an industry leading angle measurement solution suitable for machine tool speed control, crane angle control, motor speed measurement, and other industrial or automotive applications.



Figure 1. Magnetoresistive Angle Detection System (Simplified Schematic: Decoupling and All Connections Not Shown)

Возможности

  • AMR angular measurements to 1 degree accuracy
  • Non-contact
  • 12-bit resolution

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Magnetoresistive Angle Measurement  CN0323

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