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Does the noise density function increase if an OpAmp goes into slew rate limit?

Started by RobertMacy May 28, 2014
On Fri, 06 Jun 2014 18:41:17 -0700, RobertMacy
<robert.a.macy@gmail.com> wrote:

>On Fri, 06 Jun 2014 09:37:00 -0700, Jim Thompson ><To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote: > >>> ...snip.... >> The question is... How do you _see_ this noise in a transient >> analysis? >> >> ...Jim Thompson > >I enhance things a bit to make the circuit capable of producing the >results. Plus, what I do in no way changes the .ac or .noise analysis, and >I can switch it off to allow a 'normal' .tran analysis.
[snip] Can you provide a .asc file that I can run that demonstrates this noise enhancement? The .asc files so far provided do nothing unusual. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On Tue, 10 Jun 2014 09:48:56 -0700, Jim Thompson  
<To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:

> On Fri, 06 Jun 2014 18:41:17 -0700, RobertMacy > <robert.a.macy@gmail.com> wrote: > >> On Fri, 06 Jun 2014 09:37:00 -0700, Jim Thompson >> <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote: >> >>>> ...snip.... >>> The question is... How do you _see_ this noise in a transient >>> analysis? >>> >>> ...Jim Thompson >> >> I enhance things a bit to make the circuit capable of producing the >> results. Plus, what I do in no way changes the .ac or .noise analysis, >> and >> I can switch it off to allow a 'normal' .tran analysis. > > [snip] > > Can you provide a .asc file that I can run that demonstrates this > noise enhancement? > > The .asc files so far provided do nothing unusual. > > ...Jim Thompson
Those are 'reference' files that anybody can use to verify the 'normal' LTspice results are the same. For anybody interested in viewing the comparison plots, I sent to Helmut, moderator for LTspice Group, the whole file set. He will post the whole package, including the .asc files, into the /temp folders at LTspice. Will see what I can send you.