The resistor values can be determined using the formula Rf/Rin = -A, where Rf is the feedback resistor, Rin is the input resistor, and A is the desired gain. For a gain of 50, Rf should be 50 times larger than Rin. For example, if Rin is 1kΩ, Rf should be 50kΩ.
The purpose of using this type of amplifier is to amplify a small input signal by a factor of 50. This can be useful in various applications such as signal processing, audio amplification, and sensor interfacing.
Yes, different values can be used for the feedback and input resistors. However, the ratio between the two resistors should still be equal to the desired gain. For example, if Rf is 100kΩ and Rin is 2kΩ, the gain will still be 50 (100kΩ/2kΩ).
The maximum output voltage will depend on the power supply voltage and the input signal. However, it is generally recommended to keep the output voltage below the power supply voltage to avoid distortion or damage to the op amp.
One limitation is that the input signal should not exceed the power supply voltage, as this can cause clipping and distortion in the output signal. Additionally, the op amp may have a limited bandwidth and slew rate, which can affect the performance at higher frequencies.