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Step of 5 13.005E (a) Write the expression of unity gain frequency. f, Substitute 1 mA/V for and 100 MHz for f, Cc 2π(100MHz) 10⁻³ = =1.6x10⁻¹² =1.6pF Therefore, the value of capacitor Cc is 1.6pF Step of 5 Determine the 3-dB frequency of the open loop gain. 1 1 = I = 1 = = 50kHz Therefore, the value of 3 -dB frequency is 50kHz (b) Write the expression of zero. 1 Cc 1 If the zero is located at infinity, 8 0 1 R R 2mA/V I R Therefore, the value of resistance Ris 500 Ω Step of 5 (c) Write the expression for frequency of second pole. Substitute 2 mA/V for and 1 pF for 2π(10⁻¹²) 2π Therefore, the frequency of second pole 318.3MHz Step of 5 Determine the excess phase lag at f=f, tan = tan 100 = tan 318 =17.4° Therefore, the excess phase angle introduced by the second pole is 7.4° Step of 5 Determine the value of phase margin. Phase margin tan = 90° tan tan = 90° tan tan Therefore, the value of phase margin is 72.6°