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477ex99 - CARLETON UNIVERSITY FINAL EXAMINATION April 1999...

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1 CARLETON UNIVERSITY FINAL EXAMINATION April 1999 DURATION 3 HOURS No. Of Students 39 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 CMOS Opamp shown: a) With an opamp having a circuit as shown, and bias currents and other parameters as spec- ified, pick and specify any necessary transistor sizes to establish an internal bias voltage level of 1.5V as shown, and an output bias of 2.5 V. b) Determine the DC magnitude gain of the two stages ( , ) and the overall DC gain in dB. c) Calculate the pole and zero frequencies and the UGBW of the opamp in Hertz. Determine if the opamp is stable. Explain your reasoning.
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