Timeline for How do I find an ADC circuit's bandwidth experimentally?
Current License: CC BY-SA 4.0
4 events
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| Sep 12, 2019 at 2:41 | comment | added | Bruce Abbott | So long as the frequencies aren't in phase and the measurement time is long enough you should not see any attenuation due to sampling. I simulated an ADC sampling at 50kHz with a 24.999kHz input signal. The peak and rms outputs both equaled the input over a 1 second period, but there were only 2 peaks in that time and the waveform was nothing like a sine wave! To get sine wave output it would need to be low-pass filtered, which would limit the bandwidth to < fs/2. | |
| Sep 12, 2019 at 1:20 | history | edited | Bruce Abbott | CC BY-SA 4.0 |
added 3 characters in body
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| Sep 11, 2019 at 22:35 | comment | added | Paul Uszak | Aliasing had occurred to me actually. I have considered including a small pseudo random delay into the sampling loop, say uniformly distributed between 0 and 200us. Kinda sampling scope like. | |
| Sep 11, 2019 at 2:15 | history | answered | Bruce Abbott | CC BY-SA 4.0 |