Answer Posted / rohit jain

If we are talking about the Digital Comparator which
compares two binary digits (1 & 0) than we can implement
using a multiplexer.

Here A and B are the select lines of mux.
suppose A>B--------o/p=a1 (A,B)=(1,0)
A<B--------o/p=a2 (A,B)=(0,1)
A=B--------o/p=a3 (A,B)=(1,1) (0,0)

Calculate rise delay of a 3-input NAND gate driving a 3-input NOR gate through a 6mm long and 0.45m wide metal wire with sheet resistance R = 0.065 / and Cpermicron= 0.25 fF/m. The resistance and capacitance of the unit NMOS are 6.5k and 2.5fF. Use a 3 segment -model for the wire. Consider PMOS and NMOS size of reference inverter as 2 and 1 respectively. Use appropriate sizing for the NAND and NOR gate.

3925

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Give a big picture of the entire SRAM Layout showing your placements of SRAM Cells, Row Decoders, Column Decoders, Read Circuit, Write Circuit and Buffers

1158

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For a NMOS transistor acting as a pass transistor, say the gate is connected to VDD, give the output for a square pulse input going from 0 to VDD

1502

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Draw the SRAM Write Circuitry

1248

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Approximately, what were the sizes of your transistors in the SRAM cell? How did you arrive at those sizes?

1201

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Explain the operation considering a two processor computer system with a cache for each processor.

2890

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What happens if we use an Inverter instead of the Differential Sense Amplifier?

3352

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6-T XOR gate?

4293

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Describe the various effects of scaling?

4835

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Explain the three regions of operation of a mosfet.

1141

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What happens if we delay the enabling of Clock signal?

2428

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Why does the present vlsi circuits use mosfets instead of bjts?

1369

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What are the different design constraints occur in the synthesis phase?

1164

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How does Vbe and Ic change with temperature?

3568

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Draw Vds-Ids curve for a MOSFET. Now, show how this curve changes considering Channel Length Modulation.

1252

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