CHAPTER 10
AMPLIFIER FREQUENCY RESPONSE
1. The frequency at which the output power drops to one-half of its midrange value
Corner frequency
2. At the critical frequencies the output voltage is 70.7% of its midrange value. What is the value of voltage gain in dB?
-3 dB
3. What is the other term for lower critical frequency?
All of the above
4. The condition where the gain is down 3 dB is logically called _________ of the amplifier response
-3 dB point
5. The upper and lower dominant critical frequencies are sometimes called
Half-power frequencies
6. A characteristic of an amplifier in which the product of the voltage gain and the bandwidth is always constant when the roll-off is -20 dB/ decade.
Gain-bandwidth product
7. Critical frequencies are values of frequency at which the RC circuits reduce the voltage gain to ____________ of its midrange value.
70.7%
8. An octave of frequency change is a ________ -times change
2
9. Which of the following has no effect on the low-frequency response?
Internal transistor capacitances
10. What is the gain that occurs for the range of frequencies between the lower and upper critical frequencies?
Midrange gain
11. Which of the following is not a method in frequency response measurement?
Roll-off measurement
12. If the voltage gain is less than one, what is the value of the dB gain?
Negative
13. A plot of dB voltage gain versus frequency on semilog graph paper
Bode plot
14. The critical frequency at which the curve “breaks” into a -20dB/decade drop
Lower break frequency
15. The change in gain or phase shift over a specified range of input signal frequencies
Frequency response
16. A unit of logarithmic gain measurement and is commonly used to express amplifier response
Decibel
17. The lower and upper critical frequencies of an amplifier can be determined using the _____________ method by applying a voltage step to the input of the amplifier and measuring the rise and fall times of the resulting output voltage
Step-response method
18. The coupling an bypass capacitors of an amplifier affect the _________ frequency response: high or low
Low
19. The internal transistor capacitances affect the _________ frequency response: high or low
High
20. Two frequency response measurement
Frequency/amplitude and step
21. The Miller input and output capacitances for a BJT inverting amplifier depends on
Voltage gain
22. When dB is negative, it is usually called_______
Attenuation
AMPLIFIER FREQUENCY RESPONSE
1. The frequency at which the output power drops to one-half of its midrange value
Corner frequency
2. At the critical frequencies the output voltage is 70.7% of its midrange value. What is the value of voltage gain in dB?
-3 dB
3. What is the other term for lower critical frequency?
All of the above
4. The condition where the gain is down 3 dB is logically called _________ of the amplifier response
-3 dB point
5. The upper and lower dominant critical frequencies are sometimes called
Half-power frequencies
6. A characteristic of an amplifier in which the product of the voltage gain and the bandwidth is always constant when the roll-off is -20 dB/ decade.
Gain-bandwidth product
7. Critical frequencies are values of frequency at which the RC circuits reduce the voltage gain to ____________ of its midrange value.
70.7%
8. An octave of frequency change is a ________ -times change
2
9. Which of the following has no effect on the low-frequency response?
Internal transistor capacitances
10. What is the gain that occurs for the range of frequencies between the lower and upper critical frequencies?
Midrange gain
11. Which of the following is not a method in frequency response measurement?
Roll-off measurement
12. If the voltage gain is less than one, what is the value of the dB gain?
Negative
13. A plot of dB voltage gain versus frequency on semilog graph paper
Bode plot
14. The critical frequency at which the curve “breaks” into a -20dB/decade drop
Lower break frequency
15. The change in gain or phase shift over a specified range of input signal frequencies
Frequency response
16. A unit of logarithmic gain measurement and is commonly used to express amplifier response
Decibel
17. The lower and upper critical frequencies of an amplifier can be determined using the _____________ method by applying a voltage step to the input of the amplifier and measuring the rise and fall times of the resulting output voltage
Step-response method
18. The coupling an bypass capacitors of an amplifier affect the _________ frequency response: high or low
Low
19. The internal transistor capacitances affect the _________ frequency response: high or low
High
20. Two frequency response measurement
Frequency/amplitude and step
21. The Miller input and output capacitances for a BJT inverting amplifier depends on
Voltage gain
22. When dB is negative, it is usually called_______
Attenuation
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