VLSI Design Unit wise Important Questions UNIT-I 1. Explain the nMOS enhancement mode fabrication process for different conditions of V ds . 2. Derive an expression for transconductance of an n-channel enhancement MOSFET operating in active region. 3. Explain in detail the p-well process for CMOS fabrication indicating the masks used. 4. Compare the relative merits of three different forms of pull-up for an inverter circuit. What is the best choice for realization in nMOS and CMOS technology? 5. Compare BiCMOS technology with other Technologies. 6. What are the additional two layers in BiCMOS technology compared to others? With neat sketches explain BiCMOS fabrication process. 7. Show that the switching speed of an enhancement MOSFET varies inversely as the square of the channel length. 8. Derive an equation for Ids of an n-channel Enhancement MOSFET operating in Saturation region. 9. An nMOS transistor is operating in saturation region with the followi
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Hardware Description Languages There are two popular hardware description languages (HDLs) to implement a digital system design on an FPGA. These are Verilog and VHDL. In literature, it is clearly emphasized that learning one HDL simplifies learning the other. Moreover, it is indicated that learning both HDLs is important to become an expert in this discipline. How-ever, most books on digital design pick either Verilog or VHDL alone and explain the concepts using it.