{"id":2587,"date":"2024-08-05T16:55:34","date_gmt":"2024-08-05T11:25:34","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=2587"},"modified":"2025-07-16T15:24:38","modified_gmt":"2025-07-16T09:54:38","slug":"amplifier-frequency-response","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/ec\/analog-circuits\/amplifier-frequency-response","title":{"rendered":"Amplifier Frequency Response"},"content":{"rendered":"

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\"Amplifier<\/p>\n

In general, an amplifier gain factor versus frequency will resemble as shown in Figure (a). Both gain factor and frequency are plotted on logarithmic scales (the gain factor in terms of decibels). Three frequency ranges, low, midband and high are indicated. . In low-frequency range, f < fL<\/sub> , the gain decreases with decrease in frequency due to the effect of coupling and bypass capacitor. . In high frequency range, f > fH<\/sub>, stray capacitance and transistor capacitance effect causes the gain to decrease as the frequency increases. The mid-band range is the region where coupling and bypass capacitors act as short-circuit, and stray and transistor is the region where coupling and bypass capacitors act as short-circuit, and stray and transistor capacitances act as open circuit. capacitances act as open circuit. In capacitances act as open circuit. this region, the gain is almost constant. The gain at f = fL<\/sub> and at f = fH<\/sub> is 3-dB less than the maximum midband gain. The bandwidth of the amplifier (in Hz) is defined as<\/p>\n

fBW<\/sub> = fH<\/sub> – fL<\/sub><\/p>\n

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