| The advent of silicon chips has been one of the greatest revolutions in history. It is now possible to produce a die with millions of transistors on it so that a total system can be produced on a single chip. Advancements have been made in developing chips which use both digital and analog circuits. A significant number of analog components are used in real world systems. This necessitates an understanding of basic CMOS layout processes for the design of analog circuits, with special emphasis on analyzing the power dissipation in the circuits. The operational amplifier is the basic component used in many analog systems. Hence, this thesis is devoted to the design of a version of this basic component. A CMOS operational amplifier has been designed and tested with operation in both inverting and non-inverting modes. Criteria for testing the circuit are: stability analysis, Common Mode Rejection Ratio (CMRR), slew rate and large signal differential input transfer characteristics. The circuit layout has been done using MAGIC tools, and the simulation was done using SPICE. The circuit has been simulated and simulation results have been summarized. |
