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ADC sampling and signal reconstruction

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Astrid

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Hello I have any question about signal sampling theory.
I have signal generated from DDS (10bit with good reconstruction filter) , signal is sinus of known frequency 100 kHz.
I need to know as precisely as possible amplitude and time zero crossing
I have 12bit ADC with 5 MSPS (STM32F303).
i.e. 50 samples per period or 1 sample/7,2 degree.
The question is how accurately you measure / calculate amplitude and time of zero crossing?
 

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