1. List the types of IC based on the size and complexity.
The types of integrated circuits (ICs) based on size and complexity are
Small-Scale Integration (SSI)
Medium-Scale Integration (MSI)
Large-Scale Integration (LSI)
Very Large-Scale Integration (VLSI)
Ultra Large-Scale Integration (ULSI)
2. What is meant by photolithography?
Photolithography is a process used in semiconductor manufacturing to transfer
intricate circuit patterns onto a silicon wafer using light. It involves coating the wafer
with a light-sensitive material (photoresist), exposing it to UV light through a mask,
and then developing it to create precise microstructures for IC fabrication.
3. Define the diffusion process.
The diffusion process in semiconductor fabrication is a technique used to
introduce impurity atoms (dopants) into a silicon wafer to modify its electrical
properties. This is done by exposing the wafer to high temperatures in a controlled
environment, allowing the dopants to spread and form specific regions like p-type or
n- type areas in integrated circuits.
4. List the ideal characteristics of OPAMP.
The ideal characteristics of an operational amplifier (OPAMP) are
Infinite Open-Loop Gain
Infinite Input Impedance
Zero Output Impedance
Infinite Bandwidth
Zero Offset Voltage
5. An OPMAP having the differential gain, AD of 500 and common mode gain, AC
of 0.1. Calculate the CMRR of the OPAMP in decibels
CMRR = AD/AC = 500/0.1 = 5000
CMRR (dB) = 20 log10 (CMRR)
CMRR (dB) = 20 log10 (5000) = 73.98 dB
,6. Define slew rate of an OPAMP.
Slew Rate of an OPAMP is the maximum rate of change of output voltage per
unit time in response to a large input signal. It is expressed in volts per microsecond
(V/µs) and indicates how fast the output can respond to rapid input changes.
7. The current mirror shown in the figure below is to produce a current of 10 mA with
VCC = 10 V. Assume β = 120 and VBE = 0.7 V. Determine the value of resistor R1.
Ans: 922.38 Ω
8. An open loop OPAMP with supply voltage of ±15V is applied with +3V at
inverting input while non-inverting input is grounded. Determine the expected
output of the OPAMP?
, Given:
Supply voltage = ± 15 V
Inverting Input = + 3V
Non-inverting Input = 0V
9. An OPAMP inverting summing amplifier has three inputs of 1V, 3V & 4V with
equal feedback and input resistors. Calculate the output voltage, VOUT.
Ans:
10.Draw the schematic of OPAMP based positive clipper circuit.
The types of integrated circuits (ICs) based on size and complexity are
Small-Scale Integration (SSI)
Medium-Scale Integration (MSI)
Large-Scale Integration (LSI)
Very Large-Scale Integration (VLSI)
Ultra Large-Scale Integration (ULSI)
2. What is meant by photolithography?
Photolithography is a process used in semiconductor manufacturing to transfer
intricate circuit patterns onto a silicon wafer using light. It involves coating the wafer
with a light-sensitive material (photoresist), exposing it to UV light through a mask,
and then developing it to create precise microstructures for IC fabrication.
3. Define the diffusion process.
The diffusion process in semiconductor fabrication is a technique used to
introduce impurity atoms (dopants) into a silicon wafer to modify its electrical
properties. This is done by exposing the wafer to high temperatures in a controlled
environment, allowing the dopants to spread and form specific regions like p-type or
n- type areas in integrated circuits.
4. List the ideal characteristics of OPAMP.
The ideal characteristics of an operational amplifier (OPAMP) are
Infinite Open-Loop Gain
Infinite Input Impedance
Zero Output Impedance
Infinite Bandwidth
Zero Offset Voltage
5. An OPMAP having the differential gain, AD of 500 and common mode gain, AC
of 0.1. Calculate the CMRR of the OPAMP in decibels
CMRR = AD/AC = 500/0.1 = 5000
CMRR (dB) = 20 log10 (CMRR)
CMRR (dB) = 20 log10 (5000) = 73.98 dB
,6. Define slew rate of an OPAMP.
Slew Rate of an OPAMP is the maximum rate of change of output voltage per
unit time in response to a large input signal. It is expressed in volts per microsecond
(V/µs) and indicates how fast the output can respond to rapid input changes.
7. The current mirror shown in the figure below is to produce a current of 10 mA with
VCC = 10 V. Assume β = 120 and VBE = 0.7 V. Determine the value of resistor R1.
Ans: 922.38 Ω
8. An open loop OPAMP with supply voltage of ±15V is applied with +3V at
inverting input while non-inverting input is grounded. Determine the expected
output of the OPAMP?
, Given:
Supply voltage = ± 15 V
Inverting Input = + 3V
Non-inverting Input = 0V
9. An OPAMP inverting summing amplifier has three inputs of 1V, 3V & 4V with
equal feedback and input resistors. Calculate the output voltage, VOUT.
Ans:
10.Draw the schematic of OPAMP based positive clipper circuit.
