Thanks for the response Berkeman!
So does this mean that the presence of the buffer doesn't really change any calculations for the behavior of the opamp? Like, if I were to draw a bode plot for the second opamp, it wouldn't be affected by the presence of the unity buffer?
Homework Statement
Hi, I'm trying to figure out the component values(Rf and C) for the circuit given. The circuit must be designed so that it has a cut-off frequency of 1khz and a low frequency magnitude gain of 1. I know how to do it if i ignore the unity buffer in front but I'm not sure how...
I tried it again and I got a value for the capacitance and the resistors. Does this look correct?
R1 will equal the input impedence (The two inputs, V- and V+ are at approximately the same voltage, R1 is at ground voltage, therefore R1 = input impedence = 22 kΩ
Gain (A) = (Rf/ R1) →...
Homework Statement
Design this circuit to give a cut off (-3dB) frequency of 1kHz, a low frequency gain of 20, and an input impedance equal to 22kΩ
Homework Equations
The Attempt at a Solution
So, I started off with Vout/Vin = [-R2/R1]/[1 + sCR2. I also know that the dc gain...