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What pj/step in ADC means?

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shico90

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Hello, What pj/step in ADC means?
 

FOM (Figure of merit) : pJ/step (conversion step)

FOM is for comparison of ADC (energy per conversion step)

formula.gif


Where Power is the total power consumption, N is the physical resolution (ENOB), and fsampling is the maximum sampling rate.
 
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