Unformatted text preview: (see figure below). The goal of this problem is to help you become familiar with the g m /I D design methodology discussed in class. Given parameters: V DD =2V, R L =1k, R i =5k, A DC =2, maximum DC power dissipation P max =300 µ W. a) Calculate the required transconductance (neglect finite r o ). b) Find g m /I D , assuming that you are going to use the maximum available supply current. c) Determine the device width using the current density chart. d) Use the transit frequency chart to determine the device f T . Use the Miller approximation to calculate the bandwidth of the circuit. e) Verify the design using Spice. Deliverables: .OP bias point listing and plot of frequency response with annotated bandwidth. Quantify the % error in bandwidth between hand analysis and simulation. f) Repeat part (c)-(e) for L=0.5 µ m. What is the percent decrease in bandwidth? R L V o v i V I R i V DD 3. Text, Problem 7.33....
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- Fall '04
- Integrated Circuit, B. Murmann, Pmos Devices, transit frequency plots, current density plots, midterm design project.