darki_
Newbie
Hello,
Currently I'm working on the LDO reg. PSpice macromodel but I have some concerns about the output noise modelling.
After studying some papers on Op-Amp macromodels I was able to obtain fairly good match between the Output Voltage Noise Density Measurements and Simulations in 10Hz-1MHz bandwidth.
(The noise source was placed in series with noiseless bandgap reference using a ladder of res, caps and diodes with 0V DC component to don't disturb the Tran. and DC analysis)
This works unfortunatelly only in the AC Sweep/Noise Analysis.
Could you please help how to properly model Output Noise so it will work also in the Tran. analysis?
Is it possible to find such solutions in models for comercially available OP-AMPs, LDOs products e.g TI, ADI, LT.
Thank you a lot.
Best Regards
Pawel
Currently I'm working on the LDO reg. PSpice macromodel but I have some concerns about the output noise modelling.
After studying some papers on Op-Amp macromodels I was able to obtain fairly good match between the Output Voltage Noise Density Measurements and Simulations in 10Hz-1MHz bandwidth.
(The noise source was placed in series with noiseless bandgap reference using a ladder of res, caps and diodes with 0V DC component to don't disturb the Tran. and DC analysis)
This works unfortunatelly only in the AC Sweep/Noise Analysis.
Could you please help how to properly model Output Noise so it will work also in the Tran. analysis?
Is it possible to find such solutions in models for comercially available OP-AMPs, LDOs products e.g TI, ADI, LT.
Thank you a lot.
Best Regards
Pawel
