Hi, Can anyone explain the OpAmp large & small signal bandwidth from high level and also the detailed procedure to measure it with the lab setup like an example given below?
(Is the following steps are correct for large sigal Bandwidth measurement ?)
Step 1: Set Opamp Power Supply .
Step 2: Set unity gain feed back.
Step 3: Set a sine wave with 60Hz frequency and tweak the amplitude to achieve the max output swing (Vopp).
Step 4: Measure the Output Volatge Peak-to-Peak as Vopp_max.
Step 5: Sweep the frequency ( in log scale) and measure the corresponding Voltage output (Vopp) for each step until the Vopp falls below 3dB level (0.707 *Vopp_max).
Step 6: Log the frequency.
(Is the following steps are correct for large sigal Bandwidth measurement ?)
Step 1: Set Opamp Power Supply .
Step 2: Set unity gain feed back.
Step 3: Set a sine wave with 60Hz frequency and tweak the amplitude to achieve the max output swing (Vopp).
Step 4: Measure the Output Volatge Peak-to-Peak as Vopp_max.
Step 5: Sweep the frequency ( in log scale) and measure the corresponding Voltage output (Vopp) for each step until the Vopp falls below 3dB level (0.707 *Vopp_max).
Step 6: Log the frequency.