Which one of the following statements is not correct for CMOS technology in comparison with bipolar technology?

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UPSC ESE Electronics & Communication 2022 Official Paper
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  1. CMOS technology has low static power dissipation.
  2. CMOS technology has high input impedance.
  3. CMOS technology has high delay sensitivity to the load.
  4. CMOS technology has high output drive current.

Answer (Detailed Solution Below)

Option 4 : CMOS technology has high output drive current.
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Detailed Solution

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Key Points

Comparison between CMOS and BJT technology:

  • CMOS technology allows the power dissipation to be low and gives more power output, whereas bipolar takes lots of power to run the system and the circuitry requires lots of power to get activated.
  • CMOS technology provides high input impedance which is a low drive current that allows more current to be flown in the circuit and keeps the circuit in a good position, whereas it provides a high drive current means more input impedance.
  • CMOS technology provides scalable threshold voltage more in comparison to Bipolar technology which provides low threshold voltage.
  • CMOS technology provides a high noise margin and packing density whereas Bipolory technology allows having a low noise margin to reduce the high values and give a low packing density of the components.
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