Basic Amplifier Concepts

Match the expressions for amplifier gain (magnitude) to the appropriate circuit.  Assume that all MOSFETs and BJTs are identical, and that I_th = 10mA for this problem.  Also assume that all output voltages are biased at 3V, and that Vdd is 5V.  Each answer has only one solution; choose the best set of answers.  Assume nFETs and pFETs are identical parameters (i.e. K, Ith, VA ); You can assume a value for K as 2mA / V².

___ R / R₁                                                        _____ V_A / U_T                                                                       _____ g_mR

_____ k V_A / 2U_T                                                 _____ k V_A / 2U_T                                                                 _____ 2V / 100mV

_____ 1                                                                 _____ 2V / 200mV                                                                _____ k V_A / U_T