Dec 10, 2009 #1 I imefly Newbie level 4 Joined Jan 8, 2008 Messages 6 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,317 many designs need this speciality, how could simulate it with spectre? pls give some help, if you have some experiences
many designs need this speciality, how could simulate it with spectre? pls give some help, if you have some experiences
Dec 10, 2009 #2 A ankitgarg0312 Full Member level 2 Joined Feb 8, 2008 Messages 140 Helped 20 Reputation 40 Reaction score 7 Trophy points 1,298 Location india Activity points 2,109 general idea for psrr simulation can be : put a ac source in supply vsupply vdd 0 dc supply ac 1v perform a ac analysis , check voltage at output node and u will get psrr !!
general idea for psrr simulation can be : put a ac source in supply vsupply vdd 0 dc supply ac 1v perform a ac analysis , check voltage at output node and u will get psrr !!
Dec 10, 2009 #3 I imefly Newbie level 4 Joined Jan 8, 2008 Messages 6 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,317 the output voltage is digital signal how could I do ? the cmfb circuit is designed with sc circuits I'm afraid that ac analysis couldn't carry out I perform pss and pac ,however the circuits doesn't converge when pss simulation ankitgarg0312 said: general idea for psrr simulation can be : put a ac source in supply vsupply vdd 0 dc supply ac 1v perform a ac analysis , check voltage at output node and u will get psrr !! Click to expand...
the output voltage is digital signal how could I do ? the cmfb circuit is designed with sc circuits I'm afraid that ac analysis couldn't carry out I perform pss and pac ,however the circuits doesn't converge when pss simulation ankitgarg0312 said: general idea for psrr simulation can be : put a ac source in supply vsupply vdd 0 dc supply ac 1v perform a ac analysis , check voltage at output node and u will get psrr !! Click to expand...
Dec 10, 2009 #4 A ankitgarg0312 Full Member level 2 Joined Feb 8, 2008 Messages 140 Helped 20 Reputation 40 Reaction score 7 Trophy points 1,298 Location india Activity points 2,109 ac analysis can be used if it is a digital output. u can check internal nets that u think can be malfunction due to noise in supply what is meaning of sc circuits here???
ac analysis can be used if it is a digital output. u can check internal nets that u think can be malfunction due to noise in supply what is meaning of sc circuits here???
Dec 10, 2009 #5 I imefly Newbie level 4 Joined Jan 8, 2008 Messages 6 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,317 sc circuit is switch capacitor ankitgarg0312 said: ac analysis can be used if it is a digital output. u can check internal nets that u think can be malfunction due to noise in supply what is meaning of sc circuits here??? Click to expand...
sc circuit is switch capacitor ankitgarg0312 said: ac analysis can be used if it is a digital output. u can check internal nets that u think can be malfunction due to noise in supply what is meaning of sc circuits here??? Click to expand...