Lecture 7 Flashcards
It is the superposition of sinewaves with different amplitudes and frequencies
Sound
The region of frequency where the amplification and delay is reasonably constant i.e. gain is nearly equal to one.
Mid-band frequency
The region where the active circuit may behave as a simple high pass circuit. The response decrease with decreasing frequency and output approaches to zero.
Below mid-band frequency
The circuit behaves like a low-pass circuit and the response decreases with increase in frequency.
Above mid-band frequency
This means that when the frequency is at the lower cutoff frequency, the gain at that point is _____ times the gain at mid-band frequencies
0.707
it is a filter that passes only frequencies lower than the cutoff frequency
Low-pass filter
The equations show that for any inverting amplifier (negative Av,
with phase reversal), the Miller Effect capacitance is ______ sign.
positive
If the voltage gain is positive (no phase reversal), Miller Effect
capacitance is _____.
negative
It is the largest of the parasitic capacitances with Cce the smallest.
Cbe
The ______ and ______ of an amplifier affect the low-frequency response.
coupling and bypass capacitors
The ___________ capacitances affect the high-frequency response.
internal transistor
It is a logarithmic unit of measurement for power gain and voltage gain.
Decibel
A decrease in voltage gain to 70.7% of midrange value is a reduction of _____.
3 dB
A halving of the voltage gain corresponds to a reduction of ____.
6 dB
It is a unit for measuring power levels referenced to 1 mW.
dBm
