hw_junkie
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Hi,
I'm trying to design a series of cascaded filters. I was wondering, if I have one filter to remove high frequencies (in the Mhz range) and another to remove 2nd harmonic (< 10KHz) and there is a unity gain buffer (op amp) in between, will the phase shift of the second stage add up or affect the phase of the first stage (at any frequency)? or are their frequency responses isolated due to the buffer in between them?
Thx
I'm trying to design a series of cascaded filters. I was wondering, if I have one filter to remove high frequencies (in the Mhz range) and another to remove 2nd harmonic (< 10KHz) and there is a unity gain buffer (op amp) in between, will the phase shift of the second stage add up or affect the phase of the first stage (at any frequency)? or are their frequency responses isolated due to the buffer in between them?
Thx