What is Actually ADC sampling rate. Suppose i want to trigger the adc at sampling rate of 1Msps. i would trigger the adc using timer update event that would over flow after every 1 usec. But in the parameter setting using cube mx for adc has one option
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‎2021-03-24 5:47 AM
of sampling time in terms of cycles. what this sampling time corresponds to. I mean is this the actual rate at which the adc samples the input signal. If this is Sampling rate of ADC. then using Timer update event which i set for every 1hmz is related to what ?
Im getting lot of confusion.. please answer me
thank you.
Im using nulceo f446re board.
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STM32F4 Series
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‎2021-03-24 5:57 AM
Read the ADC section of the reference manual.
> ... of sampling time in terms of cycles. what this sampling time corresponds to.
This is a configured time, specifying how long the S&H capacitor of the ADC is connected to the analogue input.
Add the conversion time to that. And perhaps an inter-conversion delay.
ADC sampling time plus ADC conversion time must be less than your sampling period (1/sampletime).
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‎2021-03-24 6:01 AM
so this is not the rate at which the ADC takes the sample? This is the time for which the ADC hold the sample ? is this the right interpretation of what your saying. if possible could you explain more on this.
Thank you
