Find the low-frequency gain a0 5 voyvsig and use OCTC analysis to estimate f23 dB for the BiCMOS folded-cascode circuit of Fig. P6.41 if Rsig 5 10 kV and RL 5 100 kV. Assume both transistors are...

Find the low-frequency gain a0 5 voyvsig and use OCTC analysis to estimate f23 dB for the BiCMOS folded-cascode circuit of Fig. P6.41 if Rsig 5 10 kV and RL 5 100 kV. Assume both transistors are biased at 0.25 mA and have fT 5 400 MHz. Moreover, Mn has k 5 1.28 mA/V2 , 5 1y(15 V), and Cgd 5 Cdb 5 25 fF, and Qp has 01 5 200, VA 5 50 V, C 5 Cs 5 0.25 pF.