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troubles with SPICE models of AD8033 and AD8065

Question asked by qwerty1234 on Jun 16, 2017
Latest reply on Jun 19, 2017 by harryh


hello,

 

i am working with your open SPICE models of AD8033 and AD8065
and i am having troubles with the voltage gain characterization.

 

I would like to reproduce the OPEN-LOOP response
as appears in your datasheet, using the small-signal
AC mode of LTSPICE and/or ADISIMPE.

 

observations

 

1) AD8065 fails with LTSPICE and ADISIMPE giving the same wrong response in both simulators.
2) AD8033 fails with LTSPICE but ADISIMPE gives a reasonable response.
3) TI-OPA129 with LTSPICE gives a response reasonabily similar to the datasheet.
4) OP113 fails with LTSPICE and ADISIMPE giving the same wrong response in both simulators.
but I am able to obtain a reasonable response using a series 100R resistor with the high impedance input.

 

I send you screen shoots with circuit/model details.

 

I will be happy to provide any other simultation result or information of your interest.

 

Thanks in advance,

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