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Unformatted text preview: 10MHz. What is the gain at 100kHz, 5MHz, and 20MHz? Frequency Gain 100kHz 5MHz 20MHz 5) What is the total impedance and the impedance seen seen “looking up” and “looking down” at the output node indicated in each circuit? Write your answer in terms of g mp , g mn, r on , and r op . Assume that all nmos devices have transconductance g mn and output resistance r on , and all pmos devices have transconductance g mp and output resistance r op . Write the full expression for up and down, and then the simplified total impedance assuming that gm*ro >> 1 for all combinations of gm and ro. Full expression Simplified expression for Ro, assuming gm ro >>1 R o1, up R o1 R o1, down R o2,up R o2 R o2,down R o3,up R o3 R o3,down R o4,up R o4 R o4,down Ro1 V A V B Ro3 Ro2 V B V A V B Ro4 V B V A V A R o1, down R o1, up...
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- Fall '07
- Decibel, RO, Electrical parameters, drain voltage, drain current increases