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477ex97 - CARLETON UNIVERSITY FINAL EXAMINATION December...

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1 CARLETON UNIVERSITY FINAL EXAMINATION December 1997 DURATION 3 HOURS No. Of Students 21 Department Name & Course Number: Electronics 97.477 Course Instructor(s): Prof. Calvin Plett AUTHORIZED MEMORANDA Official Course Summary and Calculators Allowed Students MUST count the number of pages in this examination question paper before beginning to write, and report any discrepancy immediately to a proctor. This question paper has 3 pages. This examination question paper MAY be taken from the examination room. Question 1 (Total 30 Marks) For the following CMOS Opamp with a diode connected load on the first stage: a) Find the sizes of , and to result in the bias voltages and currents as shown. b) Find the transconductances of , and capacitance values and to result in a UGBW of 5 MHz and a second pole and zero both at 15 MHz. Assume . c) Find and to result in a DC gain of 150. Assume that . d) Comment on the stability of the opamp in a closed-loop application e) What is the small-signal voltage for a pure common-mode small-signal input?
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