Electronic Basics #27: ADC (Analog to Digital Converter)
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Date: 2020-09-05
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Comments and reviews: 9
musicmatt
you can get a nice signal out of 2 samples per period but in post-procesing, when you already have future samples - use some sort of spline (cause we can't get the ideal shannon interpolation formula. You can also get a good result if you delay the output by 4 or 5 samples and do a spline over them. (similar to matlabs interp1 with spline function. but the more samples you can get the better
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you can get a nice signal out of 2 samples per period but in post-procesing, when you already have future samples - use some sort of spline (cause we can't get the ideal shannon interpolation formula. You can also get a good result if you delay the output by 4 or 5 samples and do a spline over them. (similar to matlabs interp1 with spline function. but the more samples you can get the better
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Bruno
About the nyquist shannon theorem: if you use a low pass filter on the output, the double frequency of sample rate would be sufficient to recreate the sine. This is what the theorem stands upon. Its the backbone of digital audio. It has to do with fourier transform. Check Technology Connections video on the subject about nyquist shannon theorem.
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About the nyquist shannon theorem: if you use a low pass filter on the output, the double frequency of sample rate would be sufficient to recreate the sine. This is what the theorem stands upon. Its the backbone of digital audio. It has to do with fourier transform. Check Technology Connections video on the subject about nyquist shannon theorem.
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Watts
So an ADC always gives a value too low, because of the comparator only approves 1 bit if the proposed digital voltage(from SAR) is lower than Vin. And because of this the uncertainty from the resolution is always on the low side?
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So an ADC always gives a value too low, because of the comparator only approves 1 bit if the proposed digital voltage(from SAR) is lower than Vin. And because of this the uncertainty from the resolution is always on the low side?
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Jackson
Is there any way to make a decent diy ADC for plugging electric instruments and microphones into a usb and such? I could buy one, buy all of the ones I can afford look like cheap garbage that won't last long
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Is there any way to make a decent diy ADC for plugging electric instruments and microphones into a usb and such? I could buy one, buy all of the ones I can afford look like cheap garbage that won't last long
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Kamran
so should sampling rate be high in order to have good quality or low? i have geophysics course where it's mentioned that sampling rate should be small in order to observe the phenomenon adequately described
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so should sampling rate be high in order to have good quality or low? i have geophysics course where it's mentioned that sampling rate should be small in order to observe the phenomenon adequately described
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Andy
It's so in details and it's so technically in-depth in its description that I've no idea what he's talking about. It's nice to watch anyway. One day, I will understand what you are trying to say.
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It's so in details and it's so technically in-depth in its description that I've no idea what he's talking about. It's nice to watch anyway. One day, I will understand what you are trying to say.
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Adithya
Good introduction video Can i request you to make tutorial on understanding datasheets (Example here ADC specification AC, Performance, Interface)
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Good introduction video Can i request you to make tutorial on understanding datasheets (Example here ADC specification AC, Performance, Interface)
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Anton
Thank you so much! Now I know how to write my own SPI communication examples!
One question tho, how do i know the exact SPI speed (frequency?
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Thank you so much! Now I know how to write my own SPI communication examples!
One question tho, how do i know the exact SPI speed (frequency?
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Kris
Good Video. Thanks. Can you suggest on converting analog video signals to digital. Say for ex: from Analog CCTV to IP CCTV using may be Orange Pi?
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Good Video. Thanks. Can you suggest on converting analog video signals to digital. Say for ex: from Analog CCTV to IP CCTV using may be Orange Pi?
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