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Which of the following plays an important role in improving the device performance of MOSFET?(a) Dielectric constant(b) Threshold voltage(c) Power supply voltage(d) Gate to drain voltageThe question was asked during a job interview.My question is based upon MOS Digital Integrated Circuits in chapter Logic Families of Digital Circuits

Answer»

Correct CHOICE is (b) Threshold voltage

The EXPLANATION is: In MOSFET, the threshold voltage is typically 3 to 6V. This large voltage is not COMPATIBLE with the supply of 5V which is used in digital ICs. So, for the improvement of the device’s PERFORMANCE the magnitude of threshold voltage should be reduced.



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