When a high-frequency transconductance amplifier whose output resistance is 100 kΩ is connected to a load capacitor, the measured 3-dB bandwidth of the amplifier is reduced from 5 MHz to 100 kHz. Estimate the value of the load capacitor. If the original cutoff frequency can be attributed to a small parasitic capacitor at the output node (i.e., between the output and ground), what would you estimate it to be?
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When a high-frequency transconductance amplifier whose output resistance is 100 kΩ is
connected to a load capacitor, the measured 3-dB bandwidth of the amplifier is reduced from 5 MHz
to 100 kHz. Estimate the value of the load capacitor. If the original cutoff frequency can be attributed
to a small parasitic capacitor at the output node (i.e., between the output and ground), what would you
estimate it to be?
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