Figure 22, Open Loop Gain of DC Coupled Amplifier. This is another two for the price of one figure. As before the frequency range is from 1 Hz to 1 MHz. The phase graph is from minus 180 degrees to plus 180 degrees. The gain graph is from minus 80 dB to plus 20 dB. All graph readings are approximate. Remember to add 40 dB to the gain readings. The gain graph starts out at plus 4 dB at 1 Hz. It rises to a maximum of plus 18 dB at 110 Hz. The maximum is broad and smoothly rounded. The gain is 3 dB down from the peak at 1 kHz. After that it falls on a more or less straight line to minus 45 dB at 1 MHz.
The phase graph starts out at minus 110 degrees at 1 Hz. It descends to minus 180 degrees at 110 Hz. It flips to plus 180 and continues to drop to 90 degrees at 30 kHz. It rises a couple of degrees and then continues to fall to 25 degrees at 1 MHz. zero degrees phase happens above 1 MHz where the gain is even lower than at 1 MHz.
End of verbal description.
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