![]() ![]() ![]() gain and phase response is plotted in figure.3a and figure.3b. This is simply a trick to break to loop, you can read more about it in in section A.2. ![]() In this circuit a very large capacitor C1 is used to prevent DC coming from the VG1 source voltage and a very large inductor L1 is used to break the loop. TINA circuit simulation software from texas instruments is used to simulate the circuit. The circuit in figure.2 is used to determine open-loop characteristics of TL071. Open Loop Gain of TL071 figure.2 : circuit to determine open-loop characteristics of TL071 In this case the slew rate will be 41000 V/s compared to 13V/us of opamp’s slewrate, 41000 V/s is quite small. figure.1 the slew rate limiterįigure.1 shows the actual circuit itself. ![]() It doesn’t matter what opamp you use because the procedure to stabilize any loop is very similar to what we are going to discuss here. In OPA192 is used as opamp, in this blog post, however, TL071 is used because I have a bunch of these in hand. Refrence discusses its theory of operation and how to stabilize it, but it doesn’t show any information or calculation about stability and it also doesn’t tell how to stabilize the circuit when different resistor and capacitor values are used, and therefore I try to clarify this point in this post. In this blog post we’re going to discuss the slew rate limiter and its stability analysis. ![]()
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