Fundamentals Of CMOS VLSI

 For the given multilayer structure shown in Fig. 04(b) calculate the total capacitance.

Write short note on :

iv) Built in self test (BIST)

Write short note on :

iii) Level sensitive scan design and

Write short note on :

ii) Test and Testability.

Write short note on :

i) Input/output pads 

Explain read and write operations in dynamic memory cell.

Describe the CMOS pseudo static memory cell with neat figure.

With neat figure explain transistor dynamic RAM cell.

Explain with neat diagram the 4x4 cross bar switch.

With the help of logic expressions explain how to implement arithmetic logio operations with a standard adder. 

Explain with neat figure, non-inverting dynamic storage cells using CMOS transmission gate switch.

Draw and explain 4 : 1 MUX using transmission gate.

Obtain switch logic arrangements for (1) V_out - V₁A + V₂B + V₃C using 3 way selector switch and (ii) 3 input nMOS OR gate.

Discuss latch-up in a p-well CMOS structure and its remedies. With neat figure explain twin tub CMOS process steps. 

What are the most commonly used scaling models? Provide scaling factors for

(iv) speed power product

What are the most commonly used scaling models? Provide scaling factors for

(iii) current density and

What are the most commonly used scaling models? Provide scaling factors for

(ii) Gate delay

What are the most commonly used scaling models? Provide scaling factors for

(i) power dissipation per gate

Draw and explain the basic structure of dynamic CMOS logic and discuss the charging sharing problem in this structure.

With neat circuit diagram explain :

(ii) An improved BiCMOS inverter with no static current flow and better output logic levels.

With neat circuit diagram explain :

(i) A simple BiCMOS inverter 

What do you mean by  based design rule? Explain  based design rules applicable to MOS layers and transistors. 

Draw the CMOS circuit diagram, stick diagram and symbolic diagram of Boolean function F= 

What are the uses of stick diagram? Give the table of color and monochrome stick encoding for simple single metal NMOS process. 

Deduce an equation for figure of merit of MOS transistor. Fnd the operating frequency f_o in the following condition  = 125cm²/v-sec, L=2 m, V_gs = 2V and What  = IV.

For an NMOSFET, the following details are available n = 500cm²/V-se, (V_a - V_in) = 2.6V t_ox = 100 Å. Calculate Rn of the device if w 100m L = 0.5m