Determine the open-loop gain avol in vai and in db -

Question

1. Find A₁ ( = Vx/Vdiff). You need the transconductance of Q_N2 and the output resistances of Q_P2 arid Q_N2.

2. Find A₂ (= V_o/Vx). You need the transconductance of Q_P3 and the output resistances Q_p3 and Q_N3.

3. Determine the open-loop gain AVOL in VAI and in dB.

4. Use the Miller effectto estimate the break (-3dB) frequency of the open-loop gain. You will need the voltage gain Aar the value of capacitor Cc, and the output resistances of Q_P2 and Q_N2.

5. Determine the estimated gain-bandwidth product.

6. Find the maximum output voltage V_omax. This is the value at which OH enters its triode region of operation.

7. Find the minimum output voltage V_omin. This is the value at which ON5 enters its triode region of operation.

8. Determine the minimum common-mode input voltage V_CM min. This is the common-mode input voltage at which Q_N4 enters triode operation.

9. Determine the maximum common-mode input voltage V_CM max. This is the common-mode input voltage at which Q_N1 or Q_N2 enters triode operation.