Sampler Circuit with Anti-aliasing Filter

0 Credits

Login for download


SPICE simulation of a sampler with anti-aliasing filter. According to the Shannon’s theorem, a signal must be sampled at a frequency greater than twice the highest frequency component in the analog signal for recovering the original waveform. Low-pass filtering prevents aliasing (extra frequency generated). A PCM sampling rate of 8Khz for example means a 4 kHz theoretical maximum input signal frequency. This circuit implements an anti-aliasing second-order Sallen and Key active low-pass filter preceding a dual sampling switch IC CD 4016.

  • Free
  • Intermediate
  • 11-20
  • PSpice
  • 9.1+
  • No
  • 1khz input square wave signal and filtered output filtered output has frequency component over 3khz very small filtered and sampled signal FFT of sampled signal


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.