VLSI Interview Questions
Questions Answers Views Company eMail

Explain CMOS Inverter transfer characteristics?

ADS,

3436

Explain sizing of the inverter?

Infosys,

3890

How do you size NMOS and PMOS transistors to increase the threshold voltage?

4 27611

What is Noise Margin? Explain the procedure to determine Noise Margin?

1971

Give the expression for CMOS switching power dissipation?

Cypress Semiconductor,

2 7379

What is Body Effect?

CG CoreEL, Cisco, TA,

2028

What happens to delay if you increase load capacitance?

Google,

1 2877

What are the limitations in increasing the power supply to reduce delay?

Infosys,

2 12169

How does Resistance of the metal lines vary with increasing thickness and increasing length?

Infosys,

3 12359

What happens if we increase the number of contacts or via from one metal layer to the next?

Infosys,

1 6685

Give the various techniques you know to minimize power consumption?

5 11200

Explain the Charge Sharing problem while sampling data from a Bus?

2092

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

2467

What is the critical path in a SRAM?

2607

In a SRAM layout, which metal layers would you prefer for Word Lines and Bit Lines? Why?

Infosys,

3583


Post New VLSI Questions

Un-Answered Questions { VLSI }

What are the various regions of operation of mosfet? How are those regions used?

581


what is multiplexer?

659


What are the different classification of the timing control?

572


Help with VHDL programming. Write a VHDL code for a D-Latch with clear input ?? (Hint: Set up a “Process” with appropriate sensitivity list to get the desired D-Latch with Clr working.) Inputs AND OUTPUTS: entity Lab4b is Port ( Clr, Clk, D : in STD_LOGIC; Q : out STD_LOGIC); end Lab4b;

1047


Insights of a 4bit adder/Sub Circuit?

2837






What are the Factors affecting Power Consumption on a chip?

756


Cross section of a PMOS transistor?

4241


What products have you designed which have entered high volume production?

1953


What is the function of tie-high and tie-low cells?

612


How binary number can give a signal or convert into a digital signal?

678


How does a Bandgap Voltage reference work?

3233


What types of CMOS memories have you designed? What were their size? Speed?

4142


Draw the stick diagram of a NOR gate. Optimize it

745


Differences between IRSIM and SPICE?

4937


Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

2306