Mar 7, 2018 #1 M Manoni_Lo Newbie level 5 Joined Oct 13, 2017 Messages 9 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 83 Hi, I have to design a Gm-C switched capacitor filter according to the technique used in this article. Simulations of cut-off vs duty cycle are good, but i do not understand why the cut-off seems a nonlinear function of duty cycle for small delta. Thank you for reply Lorenzo Manoni
Hi, I have to design a Gm-C switched capacitor filter according to the technique used in this article. Simulations of cut-off vs duty cycle are good, but i do not understand why the cut-off seems a nonlinear function of duty cycle for small delta. Thank you for reply Lorenzo Manoni
Mar 7, 2018 #2 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,485 Helped 14,756 Reputation 29,794 Reaction score 14,121 Trophy points 1,393 Location Bochum, Germany Activity points 298,363 What do you mean with small delta? What's your duty cycle range?
Mar 7, 2018 #3 M Manoni_Lo Newbie level 5 Joined Oct 13, 2017 Messages 9 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 83 My delta is 0.279%. If I try to reduce it by a factor 10 or 100, the cut-off does not scale accordingly.
My delta is 0.279%. If I try to reduce it by a factor 10 or 100, the cut-off does not scale accordingly.
Mar 7, 2018 #4 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,485 Helped 14,756 Reputation 29,794 Reaction score 14,121 Trophy points 1,393 Location Bochum, Germany Activity points 298,363 Sounds expectable due to finite switching speed and other parasitic parameters. I presume you get the exact answer by looking into the simulation waveforms.
Sounds expectable due to finite switching speed and other parasitic parameters. I presume you get the exact answer by looking into the simulation waveforms.