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Absolute measurement error in V

679 Views - Created 21/09/2017

21/09/2017

Posted by:
mdias

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I need to measure the amount of power consumed by a USB powered device. I am going to use an ADC Pi Plus to measure the voltage difference from ground of a USB 5V+ power line and an ADC Differential to measure the voltage between the two extremities of a shunt resistor. I am just wondering where I can find information about the absolute accuracy or error of both ADCs in order to compute the accuracy of my power measurement setup.

Thanks!

21/09/2017

Posted by:
andrew

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Location:
United Kingdom

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You can find the information for the accuracy of the ADCs in the datasheet for the MCP3424 ADC which we use on both boards.  The electrical characteristics and performace charts start on page 5.

AB Electronics UK Tech Support

21/09/2017

Posted by:
mdias

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Thanks a lot.

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