Oct 10, 2006 #1 P Puppet1 Advanced Member level 2 Joined May 7, 2004 Messages 689 Helped 11 Reputation 22 Reaction score 9 Trophy points 1,298 Activity points 6,074 interview question: what makes cmos more linear than bipolar for an LNA ? A Mixer ?
Oct 11, 2006 #2 safwatonline Advanced Member level 4 Joined Nov 19, 2005 Messages 1,341 Helped 219 Reputation 438 Reaction score 48 Trophy points 1,328 Location EGYPT Activity points 9,038 i guess in general linearity is traded with gain , BJT has higher hain so lower linearity
Oct 11, 2006 #3 S sengyee88 Advanced Member level 4 Joined Oct 9, 2006 Messages 113 Helped 16 Reputation 32 Reaction score 1 Trophy points 1,298 Activity points 1,956 For a given driving current (collector current or drain current), linearity of bipolar transistor is limited by Vt (gm=Ic/Vt). However, we can adjust the size of the MOS transistor to obtain different range of linearity.
For a given driving current (collector current or drain current), linearity of bipolar transistor is limited by Vt (gm=Ic/Vt). However, we can adjust the size of the MOS transistor to obtain different range of linearity.