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Unformatted text preview: 2 Question 3 (2 + 2 = 4 points): Consider a linear system with input x(t) and output y(t) . The system is characterized by the second-order frequency response H(j ) , shown as the thick curve. (a) What is the gain-bandwidth of the linear system? (b) Find the input signal x(t) that would result in an output y(t) = sin(10t). Question 4 (2 points): Shown below is the Bode plot of the magnitude of H , which has one pole and one zero. Draw the Bode plot of the magnitude of G , which is equal to H but with an additional zero at = 10 4 . Question 5 (2 + 2 + 2 = 6 points): Assume the opamp G is ideal. (a) Find the common mode gain. (b) Find the differential mode gain. (c) Calculate the output voltage caused by the input bias currents. x(t) y(t) H(s) | H | (dB) (log scale) 80 dB 10 5 40 dB | H | (dB) (log scale) 80 dB 10 2 20 dB v 1 v OUT- + 500 G v 2 1 k 1 k 1 k 1 k...
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This note was uploaded on 05/30/2009 for the course ECE 641158 taught by Professor Curtshurgers during the Spring '09 term at UCSD.
- Spring '09