Sigma-delta current feedback

How is sigma-delta current feedback connected on the FlexMC LV platform?

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    •  Analog Employees 
    on Oct 24, 2014 7:21 PM over 6 years ago

    Current feedback to a processor/FPGA is available as an output of sigma-delta modulators connected across a shunt resistor in series with the motor phase as shown below. MCLK is the high frequency clock (5-20MHz) from the processor/FPGA and MDAT is the high frequency single-bit data stream from the modulator to the processor/FPGA. This data must be filtered and decimated within the processor/FPGA connected to the platform.


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  • 0
    •  Analog Employees 
    on Oct 24, 2014 7:21 PM over 6 years ago

    Current feedback to a processor/FPGA is available as an output of sigma-delta modulators connected across a shunt resistor in series with the motor phase as shown below. MCLK is the high frequency clock (5-20MHz) from the processor/FPGA and MDAT is the high frequency single-bit data stream from the modulator to the processor/FPGA. This data must be filtered and decimated within the processor/FPGA connected to the platform.


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