Oct 5, 2010 #1 S sureshnaidu Member level 2 Joined Sep 13, 2010 Messages 48 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,288 Location bangalore Activity points 1,586 common drain amplifier gain is unity.but it is giving a 6dB loss when i simulate is in cadence virtuoso.can anybody explain?
common drain amplifier gain is unity.but it is giving a 6dB loss when i simulate is in cadence virtuoso.can anybody explain?
Oct 5, 2010 #2 prcken Advanced Member level 1 Joined Nov 1, 2006 Messages 419 Helped 41 Reputation 82 Reaction score 37 Trophy points 1,308 Location Shanghai Activity points 4,059 the DC gain of sorce follower is gm*Rload/(1+gm*Rload) , what is your gm and Rload value, respectively? 6dB loss means gm*Rload=1
the DC gain of sorce follower is gm*Rload/(1+gm*Rload) , what is your gm and Rload value, respectively? 6dB loss means gm*Rload=1
Oct 5, 2010 #3 LvW Advanced Member level 6 Joined May 7, 2008 Messages 5,910 Helped 1,753 Reputation 3,512 Reaction score 1,364 Trophy points 1,393 Location Germany Activity points 40,401 sureshnaidu said: common drain amplifier gain is unity.but it is giving a 6dB loss when i simulate is in cadence virtuoso.can anybody explain? Click to expand... Common drain amplifier gain is ALWAYS smaller than unity. Sometimes only by 0.1% and sometimes by 50% - depending on the transconductance and the load resistor.
sureshnaidu said: common drain amplifier gain is unity.but it is giving a 6dB loss when i simulate is in cadence virtuoso.can anybody explain? Click to expand... Common drain amplifier gain is ALWAYS smaller than unity. Sometimes only by 0.1% and sometimes by 50% - depending on the transconductance and the load resistor.
Oct 5, 2010 #4 S sureshnaidu Member level 2 Joined Sep 13, 2010 Messages 48 Helped 2 Reputation 4 Reaction score 2 Trophy points 1,288 Location bangalore Activity points 1,586 prcken said: the DC gain of sorce follower is gm*Rload/(1+gm*Rload) , what is your gm and Rload value, respectively? 6dB loss means gm*Rload=1 Click to expand... Thank you very much
prcken said: the DC gain of sorce follower is gm*Rload/(1+gm*Rload) , what is your gm and Rload value, respectively? 6dB loss means gm*Rload=1 Click to expand... Thank you very much