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AmpH1H2 tradeoffs

Question asked by ZACHADS on Oct 7, 2004
Latest reply on Oct 7, 2004 by mfredrik

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I was going through the data-based amplifier/behavioral model example called AmpH1H2_prj.

What is the main benefit of using the AmpH1H2 model instead of a regular HB simulation of the original circuit block (like the circuit_level_amp_SOITOI.dsn)? It seems since this element only accurately models up to second order, it is limited in its application.

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mfredrik Oct 7, 2004 6:55 AM
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A circuit level simulation is always going to be more accurate, but it will be slower. Databased models (and other system level models) will all have limitations. They might not represent the noise properly, they might not include all nonlinearities etc etc. But if you want to simulate a huge design, with hundreds or thousands of amplifiers, then a circuit level simulation could be out of the question. A databased model, like the AmpH1H2, could then be used as an approximation, but only if you're not interested in the higher order products.
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