An opamp has an open-loop transfer function given by                                         A s( ) A0 1 s ωz + ----- ⎝ ⎠ ⎛ ⎞ 1 s ω1 + ----- ⎝ ⎠ ⎛ ⎞ 1 s ω2 + ----- ⎝ ⎠ ⎛ ⎞ =...

An opamp has an open-loop transfer function given by

                                        A s( ) A0 1 s ωz + ----- ⎝ ⎠ ⎛ ⎞ 1 s ω1 + ----- ⎝ ⎠ ⎛ ⎞ 1 s ω2 + ----- ⎝ ⎠ ⎛ ⎞ = --------------------------------

Assume and rad/s. The feedback network has a gain . The frequency of the zero is 70% higher than the resulting open-loop unity-gain frequency, . Find and so that the phase margin is 80°.