- #1
j777
- 148
- 0
Hi,
I would like to figure out the RC values for a low-pass filter to filter out the noise depicted in the attachment (the spikes). The ADC I'm using is capable of 250kSPS and I'm reading samples in a loop with very little processing between them. The noise seems to only exist for 2-4 samples so if I'm calculating this properly it lasts about 16 microseconds per spike. I already have an RC low-pass filter between the instrumenation amplifier and the ADC; R=1k and C=2.7nF. Would increasing the C value be the proper way to filter out the noise and if so by how much?
Thanks
I would like to figure out the RC values for a low-pass filter to filter out the noise depicted in the attachment (the spikes). The ADC I'm using is capable of 250kSPS and I'm reading samples in a loop with very little processing between them. The noise seems to only exist for 2-4 samples so if I'm calculating this properly it lasts about 16 microseconds per spike. I already have an RC low-pass filter between the instrumenation amplifier and the ADC; R=1k and C=2.7nF. Would increasing the C value be the proper way to filter out the noise and if so by how much?
Thanks