Skip to main content
2 of 7
added 239 characters in body
kile
  • 849
  • 3
  • 12

The following is my analysis.

enter image description here

Firstly, we analyse the left part of this circuit with the use of KCL.

$$- \frac{V_{out2}} {R_D} = (V_{in1} - V_p) g_{m1} + \frac{V_{out2} -V_p} {r_{o1}}$$

$$\Rightarrow - V_{out2} (\frac{1} {r_{o1}} + \frac{1} {R_D}) = V_{in1} g_{m1} - V_p (g_{m1} + \frac{1} {r_{o1}})$$

$$\Rightarrow V_p = \frac{V_{in1} g_{m1} + V_{out2} (\frac{1} {r_{o1}} + \frac{1} {R_D})} {g_{m1} + \frac{1} {r_{o1}}}$$

Secondly, we analyse the right part of this circuit with the use of KCL. $$ \frac{V_{out1}} {R_D} = -(V_{in2} - V_p) g_{m2} + \frac{V_p -V_{out2}} {r_{o2}}$$

kile
  • 849
  • 3
  • 12