Spehro Pefhany Spehro Pefhany k 5 5 gold badges silver badges bronze badges. Its offset voltage is listed at uV max on the datasheet they use about 40uV in the LTSpice model and it does not saturate your output in simulation: You could modify the model yourself and make it better if its worth your time. The best answers are voted up and rise to the top. Go in there and change it to, say, uV—you’ll see what the effect of the offset voltage is, a real limitation. The other type would be LFBN. It may not be proper to call such a circuit as an integrator circuit.
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Help me to detect an IC in a circuit 0.
Email Required, but never shown. This is your circuit: If nothing else, look at the output voltage swing. Unicorn Meta Zoo 9: Sign up using Email and Password.
LFN datasheet & applicatoin notes – Datasheet Archive
The time now is LF ic datasheet discussion. Big6 Big6 3, 1 1 gold badge 7 7 silver badges 15 15 bronze badges. Following your point on the input offset voltage of 3mV of LF, I added such amount of DC value in my signal source of my original datasbeet and repeated the simulation. It may not be proper to call such a circuit as an integrator circuit. What is a Discussion forum? I’m willing to bet they left it at that, from what I’ve satasheet in the past with other models this is usually the case.
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Originally Posted by betwixt. It does answer the question and adds some value too, of course imho.
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I used the LTpsice to simulate the feedback performance of a integrator circuit with op amp LF which is a JFET input op amp but I go strange results see the image below. What could be the cause of this discrepancy?
Just to verify that I didn’t make any mistake when importing the op amp model, I did the same simulation with another op amp OPA and the simulation results were reasonable see image below. Integrated ToF sensor module measures just 2. This is probably a crap model, which is very common.
Why S22 curve is like this 8. I am ‘injecting’ a voltage and measure the gain around the loop. How to interpret op amp minimum supply voltage if the datasheet field is blank? The other type would be LFBN.
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I have seen similar issues in the past with LTspice and from my experience it comes down to the dc operating point. Mains leaking currents causing problems in my house 4.
So if you have 0 Vdc at the input plus the ac signal, you should have 0 Vdc at the output plus the ac signal times whatever gain dztasheet have. That arrangement makes both the input and output be at the same dc level and keeps the opamp in the linear region. Asked 1 year, 2 months ago.