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A CMOS amplifier when compared to an N–channel MOSFET, has the advantage of
  • a)
    Higher cut–off frequency
  • b)
    Higher voltage gain
  • c)
    Higher current gain
  • d)
    Lower drain current from the power supply, thereby less dissipation
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A CMOS amplifier when compared to an N–channel MOSFET, has the a...
MOS amplifier generally has lower power consumption and higher input impedance. It also has lower output impedance and higher gain. Additionally, CMOS amplifiers have a wider bandwidth and are more resistant to noise. However, CMOS amplifiers may have a limited output voltage swing and a lower maximum output current compared to N-MOS amplifiers.
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Community Answer
A CMOS amplifier when compared to an N–channel MOSFET, has the a...
Complementary Metal-oxide-semiconductor (CMOS) uses complementary & symmetrical pair of P-type & n-type MOSFETS.
  • The two important characteristics of CMOS devices are high noise immunity and low power dissipation.
  • CMOS devices dissipate less power than NMOS devices because the CMOS dissipates power only when switching (“dynamic power), whereas N channel MOSFET dissipates power whenever the transistor is on because there is a current path from Vdd to Vss.
  • In a CMOS, only one MOSFET is switched on at a time. Thus, there is no path from voltage source to ground so that a current can flow. Current flows in a MOSFET only during switching.
  • Thus, compared to N-channel MOSFET has the advantage of lower drain current from the power supply, thereby causing less power dissipation.
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A CMOS amplifier when compared to an N–channel MOSFET, has the advantage ofa)Higher cut–off frequencyb)Higher voltage gainc)Higher current gaind)Lower drain current from the power supply, thereby less dissipationCorrect answer is option 'D'. Can you explain this answer?
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