I downloaded the demo software for AD5791. In a real application can I get better than 5 uV accuracy?
The reference applied to the AD5791 will make a big impact on its accuracy if this is not an ultra precision reference. The AD5791 offers an accuracy of 1 LSB, which is 19.07 μV for 20-bit resolution and a 20 V peak-to-peak voltage range.
To answer your question, it will not be possible to obtain an accuracy better than 5uV.
Thank you for the information.
Then may i know what would be the accuracy for 20-bit resolution with 9 V pk-pk voltage range?
The accuracy is still the same at 1LSB, which is 8.58μV for 20-bit resolution with 9V pk-pk voltage range. Take note that there is an input range for the reference inputs on Table 3 in the data sheet.
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