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ADC_SCALING


An analog to digital converter (ADC) converts a voltage signal as input to a digital signal in a number of bits that depends on ADC resolution. Signals that are not available in voltage form, such as currents, are converted to a voltage signal before conversion to digital data. The digital signal output of the ADC that is relative to its bit width must be scaled to a value that can be properly interpreted by the system that processes the signal.


Features and Benefits


  • Performs auto offset computation initially.
  • Scales raw ADC data into phase currents
  • Detects over current fault after phase current computation, which can be used to stop the motors immediately.
  • Involves disabling PWM and triggering the ADC by a pre-determined number of times (8192) to determine ADC offset
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    Documentation


    Title
    ADC Scaling User Guide Download