Search Engine www.edaboard.com

Opamp Macro Model

Add Question

11 Threads found on edaboard.com: Opamp Macro Model
I am using LTSpice for simulation. I downloaded the model for dual opamp MAX44263 from Maxim. That's the only model of that opamp. I tried to include into the simulation program but it will not accept it. I need to understand the terms in the .txt file so I can get rid of the second opamp and the shut (...)
Are you sure it is not a problem with the model and the use of global node zero which doesn't appear on the pinout? Keith Yes, I think we should not blame the simulator but instead the model which is used to simulate opamp circuits.#As you probably know - it is a so called "macro model" that uses controlled sourc
I add a opamp macromodel from the functional library of cadence to my schematic. The model's parameters are setted by default, and the last parameter is 'macro name=f_op1v1c'. The schematic is simulated in Analog environment, but an error is given that X0 is an instance of undefined model of (...)
I suggest to use exactly the same circuitry with another opamp. Perhaps the macro model has severe errors.
One reason for your problems is certainly the fact that your opamp has a POSITIVE capacitive feedback. This causes instability. Try to interchange the opamp inputs.
Hi, I designed TYPE-3 error amplifier. How can I ac-simulate my error amp? At first, I used macro opamp model(with 80dB DC gain, 10kHz 1pole system) and ac-simulated. My problem is when input common mode voltage varys, vout(s)/vin(s) are different! For example, in+ = 0V in - = 0V vout(s)/vin(s) is same as what i desired. (...)
I add a opamp macromodel from the functional library of cadence to my schematic. The model's parameters are setted by default, and the last parameter is 'macro name=f_op1v1c'. The schematic is simulated in Analog environment, but an error is given that X2 is an instance of undefined model of (...)
Hello all, i am looking for a macro model (using ideal circuit elements such as R's C's VCCS..) or a veriloga model. i am looking for one that is fully differential and can model settling and slewing behavior accurately. many thanks
A question about general opamps (see attached picture): Normally, with regular power supplies, the macro model of an ideal opamp can be shown to be the picture in the top (notice that the output voltage is referenced to ground). ==> Consider the bottom opamp model and (...)
I want to know how to measure fully differential amp's spec, I used LMH6550, National semiconductor macro spice model. I thought I can know How to measure Fully differential opamp' spec if I compare simulation result with LMH6550 datasheet after simulating LMH6550 macro model. In the LMH6550 (...)
I want to simulate a PWM feedback circuit by using Pspice. The problem is: which is the macro model of the amplifier and comprator in Pspice? Thank you!


Last searching phrases:

cant get | nobody | nobody | nobody | nobody | nobody | nobody | nobody | nobody | nobody