MOSFET

How does the absolute value of a MOSFET's threshold voltage generally change as temperature rises?

  1. AIt increases
  2. BIt decreases
  3. CIt does not change
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Answer: B. It decreases

The absolute value of a MOSFET's threshold voltage generally decreases as temperature rises. Mobility also decreases, so how the drain current depends on temperature varies with operating conditions. The lower threshold increases off-state leakage, one reason leakage grows at high temperature.

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