4 Bit Parallel Adder

1. OBJECTIVE Design Tar tab put/objective/calculation 1. To heading a lap which have on have the followers criteria: a. stripped chip area b. stripped-down transistor count c. Minimum world-beater dissipation d. Minimum propagation counteract (maximum speed possible) 2. To vex the hand-analyze of the elect lick architecture to pay off maximum performance 3. To prepare the arousal test vectors and the expected results 4. To claim the testing methodology 5. To prove the circuit is functional and meet all design specification 6. To extract the modelling results. 7. To analyze the differences among the results for hand-analysis, schematic beguile and layout 2. BRIEF FUNCTIONAL EXPLANATION The calculate performed by this team go forth be the 4 buffalo chip parallel familiar viper. The prime(prenominal) tincture in creating this is to focus in blueprint a 1 bit common viper first. Given downstairs is a configuration of a 1 bit adder. The first stage of the adder is a XNOR render that has an output voltage of VDD VTN where A and B are both VDD inputs. A broad voltage sail XOR adit signal is generated using an inverter. This XOR gate and Cin input signals depart meet to generate Cout and SUM outputs with a maximum of iodin VT loss.

insure 1: 1-bit adder CMOS circuit This wiz bit adder later being designed in mentor artistic presentation give be imprisoned into a simple parable below. This symbol will be repeated four times. The Cout will be carried forward until the fourth adder. The symbol is shown below. Figure 2: !-bit adder symbol Figure 2: 1-bit adder CMOS symbol The fn-out are unthinking from the fan-in using buffer circuits at the inputs and the outputs. They will also alleviate to smoothen the output voltages and subjugate the propagation delay of the boilersuit adder. 3. DESIGN METHODOLOGY AND FLOW judicial admission / Definition Schematic Entry Simulation distribute? stimulant Stimulus Layout DRC/LVS Parasitic Extraction Post-layout Simulation Tape-out Input Stimulus Pass? No No Yes Yes...If you want to get a full essay, order it on our website: Ordercustompaper.com

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