Solid State Electronic Devices, 7th Edition

Self Quiz

Question 1

1. What is the main distinction between an active device and a passive device?

2. If a device has power gain, where is the higher energy of the a-c signal at the output coming from?

3. What is the distinction between a current-controlled vs. voltage-controlled three-terminal active device? Which is preferable?

Question 2

For parts (a) through (c) below, consider the following low-frequency gate capacitance (per unit area) vs. gate voltage characteristic for a metal gate n-channel MOSFET.

1. On the below figure label the approximate regions or points of

   • weak inversion (1)

   • flat band (2)

   • strong inversion (3)

   • accumulation (4)

   • threshold (5)

   • depletion (6)

2. What is the oxide capacitance per unit area?           µF/cm²

3. On the curve below, sketch ...