PSpice--Monte Carlo Delay?

B

Bob Penoyer

Guest
I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?
 
Bob Penoyer wrote:
I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?
Click to expand...
Yes. Use SuperSpice:)

SuperSpice allows MC and parameter sweeps on TLines. There are some
examples in the example folder.

Kevin Aylward
informationEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.
 
On Wed, 13 Apr 2005 20:53:29 -0700, Bob Penoyer
<bob@NOSPAMbobpenoyer.com> wrote:

I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?
Click to expand...
I don't Monte Carlo, since chip components are ratiometric, requiring
different means to test for worst-case.

BUT, couldn't you simply parameterize TD?

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
On Thu, 14 Apr 2005 16:20:25 -0700, Jim Thompson
<thegreatone@example.com> wrote:

On Wed, 13 Apr 2005 20:53:29 -0700, Bob Penoyer
bob@NOSPAMbobpenoyer.com> wrote:

I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?

I don't Monte Carlo, since chip components are ratiometric, requiring
different means to test for worst-case.

BUT, couldn't you simply parameterize TD?
Click to expand...
Yes. Can I used Monte Carlo with a parameterized value? How?
 
On Thu, 14 Apr 2005 20:41:54 -0700, Bob Penoyer
<bob@NOSPAMbobpenoyer.com> wrote:

On Thu, 14 Apr 2005 16:20:25 -0700, Jim Thompson
thegreatone@example.com> wrote:

On Wed, 13 Apr 2005 20:53:29 -0700, Bob Penoyer
bob@NOSPAMbobpenoyer.com> wrote:

I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?

I don't Monte Carlo, since chip components are ratiometric, requiring
different means to test for worst-case.

BUT, couldn't you simply parameterize TD?

Yes. Can I used Monte Carlo with a parameterized value? How?
Click to expand...
See PSpice Reference Guide (v10.3), pp 47...50

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
In article <ijut5152hvb46o5d3dtkt5r1gaoakc4hse@4ax.com>,
thegreatone@example.com says...
On Wed, 13 Apr 2005 20:53:29 -0700, Bob Penoyer
bob@NOSPAMbobpenoyer.com> wrote:

I need to use an analog delay that has a tolerance so that the delay
varies during a Monte Carlo simulation.

TLine would be a great part but it doesn't have a tolerance parameter.

An all-pass network can't be used for the delay because it doesn't
have a linear phase response and the signal is complex.

Can TLine or something like it be made to use a tolerance that Monte
Carlo can operate on? Any other suggestions?

I don't Monte Carlo, since chip components are ratiometric, requiring
different means to test for worst-case.
Click to expand...
When I was doing this, we were given the process distributions
(including tracking) to use in the simulations. We also used end-
point distributions to converge on the "worst-case" more quickly.
Discretes were another issue though.
BUT, couldn't you simply parameterize TD?
Click to expand...
--
Keith
 
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