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The typical quiescent power dissipation of low-power CMOS units is
  • a)
    1 mW
  • b)
    0.5 mW
  • c)
    2 nW
  • d)
    50 nW
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The typical quiescent power dissipation of low-power CMOS units isa)1 ...
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.
  • The typical quiescent power dissipation of low-power CMOS units is 2 nW.
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The typical quiescent power dissipation of low-power CMOS units isa)1 mWb)0.5 mWc)2 nWd)50 nWCorrect answer is option 'C'. Can you explain this answer?
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