Linear Integrated Circuits Questions and Answers
Q1.
How will be the initial artwork done for a normal IC?
Answer :
Larger than the final dimension of chip
Q2.
Which component is not used as an impurity in diffusion process?
Answer :
Phosphorous
Q3.
How the aluminium film coating is carried out in metallization process?
Answer :
Aluminium is vacuum evaporated and then condensed
Q4.
During ion implantation process (before the ion strike the wafer) the accelerated ions are passed through
Answer :
Strong Magnetic field
Q5.
What is the reason for using Lateral pnp transistor in Integrated Circuits?
Answer :
Simultaneous fabrication of pnp and npn transistors
Q6.
State the correct reason for neglecting pnp transistor.
Answer :
Current gain of pnp transistor is as low as 1.5 to 30
Q7.
How the ohmic contact is formed in metal semiconductor diode? (AL-Aluminium)
Answer :
n+ diffusion in n-region near AL lead
Q8.
Which integrated resistor can achieve high value of sheet resistance?
Answer :
Pinched resistor
Q9.
In MOS capacitor, the preference in dielectric layer is given to Silicon Nitride (Si3N4) because
Answer :
It makes capacitor non-polar
Q10.
Which technology is used to get cheap resistors and capacitors?
Answer :
Thin film technology
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