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please include all the explanation/steps. Thanks! Consider the op-amp with negat

ID: 1937946 • Letter: P

Question

please include all the explanation/steps. Thanks!



Consider the op-amp with negative feedback from the notes that behaves as an inverting amplifier. If the op-amp is powered with a 5V DC source, compute the resistor values Rin and Rf that will give you the maximum possible gain without clipping the following symmetric input signal: If the following asymmetric signal is to be amplified and the power supply is also asymmetric with supply voltages of +5V and -2V respectively, what should the resistor values be?

Explanation / Answer

1. in the negative feed back we get the op-amp gain Av=-Rf/Rin V0=-Rf/Rin * Vin. here the max voltage is +or- 5V so max V0 ranges from +5 to -5V to get that Rf/Rin = V0/Vin = 5/80m = 62.5. there fore Rf=62.5Rin if Rin=1kohm the Rf = 62.5kohm 2. similarly here max o/p +5 to -2 so we have to consider min value other wise -ve input will be clipped Rf/Rin = 2/50m =40 therefore Rf=40Rin if Rin=1k then Rf=40k ohm