CHAPTER 9 FET AMPLIFIERS AND SWITCHING CIRCUITS

CHAPTER 9
FET AMPLIFIERS AND SWITCHING CIRCUITS

1. An amplifier that primarily uses only MOSFETs.
Class D

2. A process in which an input signal is converted to a series of pulses with widths that varies proportionally to the amplitude of the input signal.
PWM

3. It removes the modulating frequency and harmonics and passes only the original signal to the output.
Low-Pass Filter

4. The voltage gain of a common-drain amplifier is always
Slightly less than 1

5. The load resistance connected to the drain of a common-source amplifier reduces ____________
Voltage gain

6. What is the relationship between the input resistance of a common-gate amplifier to its transconductance?
They are inversely proportional

7. The efficiency of a class D amplifier approaches
100%

8. The input signal is applied to the gate and the output is taken from source
Common-drain

9. A nonlinear amplifier in which the transistors are operated as switches
Class D

10. A device that switches an analog signal on and off
Analog switch

11. Consists of two or more analog switches that connect sample portions of their analog input signals to single output in a time sequence
Analog multiplexer

12. Used in low-power digital switching circuits
CMOS

13. Amplifier commonly used as frequency multiplier
Class C

14. The least efficient amplifier
Class A

15. An amplifier that is biased below cutoff
Class c

16. A class of amplifier that operates in the linear region for only a small part of the input cycle
Class C

17. In a class AB amplifier, if the VBE drops are not matched to the diode drops or if the diodes are not in thermal equilibrium with the transistors, this can result in
Thermal runaway