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STM32F4 ADC noise with increased activity in USB FS?

hari
Associate II

‎2015-10-12 10:29 PM

Posted on October 13, 2015 at 07:29

Hi all,

I am trying to identify a certain frequencies using STM32F4x's ADC(STM32F4). Sensitivity of detecting these frequencies worsens when we stream data continuously through USB operating in Fullspeed (say streaming of the acquired ADC samples to PC host). 

Would like to understand whether this an expected behaviours?

If it is ADC noise generated due system activities(like USB), how can this issue dealt in effective way either by changes to firmware or hardware? 

Thanks

#stm32f4 #adc
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