4 Bit Parallel Adder

1. OBJECTIVE Design Tar stay put/ purpose/calculation 1. To design a lap which pass on have the following criteria: a. stripped chip area b. minimum transistor count c. token(prenominal) power dissipation d. Minimum propagation hamper (maximum speed possible) 2. To vex the hand-analyze of the chosen racing travel architecture to get maximum performance 3. To prepare the input signal test vectors and the expected results 4. To produce the testing methodology 5. To show the circuit is functional and meet every design spec 6. To extract the simulation results. 7. To analyze the differences among the results for hand-analysis, schematic delight and layout 2. picture FUNCTIONAL EXPLANATION The project performed by this team go forth be the 4 bit parallel park viper. The initial tincture in creating this is to focus in invention a 1 bit common viper first. Given down the stairs is a con figuration of a 1 bit adder. The first stage of the adder is a XNOR entrée that has an output electric potential of VDD VTN where A and B are both VDD inputs. A across-the-board voltage sail XOR gate signal is generated using an inverter. This XOR gate and Cin input signals depart cooperate to generate Cout and SUM outputs with a maximum of iodin VT loss. Figure 1: 1-bit adder CMOS circuit This one bit adder after being designed in mentor artistic creation forget be confined into a simple emblem below. This image will be repeated four times. The Cout will be carried in advance until the 4th adder. The symbol is shown below. Figure 2: !-bit adder symbol Figure 2: 1-bit adder CMOS symbol The fn-out are disjointed from the fan-in using buffer circuits at the inputs and the outputs. They will also suffice to smoothen the output voltages and reduce the propagation delay of the boilers suit adder. 3. DESIGN METHODOLOGY AND FLOW Specifica tion / Definition formal Entry Simulation! Pass? stimulus Stimulus Layout DRC/LVS epenthetic Extraction Post-layout Simulation Tape-out Input Stimulus Pass? No No Yes Yes...If you want to get a full essay, target it on our website: OrderCustomPaper.com

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