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OpAmp Output DeadBand

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Jim Thompson
Guest

Wed Nov 09, 2016 10:55 pm   



Turns out I was making things too difficult with my nice LOG(COSH(x))
"smoother" when it comes to modeling OpAmp Output DeadBand.

Examination of the LOG(COSH(x)) solution puzzled me, exhibiting some
unexpected instability.

Last night, as I tossed and tumbled, fearing a Clinton Supreme Court
disaster when I awoke, one nightmare suggested this downright trivial
solution...

<http://www.analog-innovations.com/SED/DeadBand_2016-11-09_08-43-51.png>

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, 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'm looking for work... see my website.

John Larkin
Guest

Thu Nov 10, 2016 2:32 am   



On Wed, 09 Nov 2016 08:55:53 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote:

Quote:
Turns out I was making things too difficult with my nice LOG(COSH(x))
"smoother" when it comes to modeling OpAmp Output DeadBand.

Examination of the LOG(COSH(x)) solution puzzled me, exhibiting some
unexpected instability.

Last night, as I tossed and tumbled, fearing a Clinton Supreme Court
disaster when I awoke, one nightmare suggested this downright trivial
solution...

http://www.analog-innovations.com/SED/DeadBand_2016-11-09_08-43-51.png

...Jim Thompson


Why not just use transistors in an opamp model? That would be more
accurate... get the impedance changes right, too.


--

John Larkin Highland Technology, Inc
picosecond timing precision measurement

jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com

Jim Thompson
Guest

Wed Jan 11, 2017 12:27 am   



On Wed, 09 Nov 2016 11:32:02 -0800, John Larkin
<jjlarkin_at_highlandtechnology.com> wrote:

Quote:
On Wed, 09 Nov 2016 08:55:53 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon_at_On-My-Web-Site.com> wrote:

Turns out I was making things too difficult with my nice LOG(COSH(x))
"smoother" when it comes to modeling OpAmp Output DeadBand.

Examination of the LOG(COSH(x)) solution puzzled me, exhibiting some
unexpected instability.

Last night, as I tossed and tumbled, fearing a Clinton Supreme Court
disaster when I awoke, one nightmare suggested this downright trivial
solution...

http://www.analog-innovations.com/SED/DeadBand_2016-11-09_08-43-51.png

...Jim Thompson

Why not just use transistors in an opamp model? That would be more
accurate... get the impedance changes right, too.


That's only a small piece of the puzzle. My object is always to make
models that converge and behave like the real-deal.

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

elektroda.net NewsGroups Forum Index - Electronics Design - OpAmp Output DeadBand

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