I want to do a DC sweep (.DC):

-3.6V to -1V (step size = 2.6V)

-1V to +2V (step size = (100/3)mV)

+2V to +7.2V (step size = 5.2V)

(Lots of data points around the "knee" :-)

That makes a list that PSpice barfs on, claiming "list too long".

Anyone know some gimmicks to get around that limitation?

Thanks!

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)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 Mon, 03 May 2010 16:51:37 -0700, Jim Thompson
wrote:

I want to do a DC sweep (.DC):

-3.6V to -1V (step size = 2.6V)

-1V to +2V (step size = (100/3)mV)

+2V to +7.2V (step size = 5.2V)

(Lots of data points around the "knee" :-)

That makes a list that PSpice barfs on, claiming "list too long".

Anyone know some gimmicks to get around that limitation?

Thanks!

...Jim Thompson

This works, but a klutz...

Sim -3.6V to -1V (step size = 2.6V), export data to a .dat file

Sim -1V to +2V (step size = 40mV), export data to a .dat file

Sim +2V to 7.2V (step size = 5.2V)

Import data from first two sims to third sim.

Highlight waveform name, copy, then paste into a text file, result is
a list of I/O pairs.

See... http://analog-innovations.com/SED/Da..._Merge_TYP.pdf

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

The only thing bipartisan in this country is hypocrisy

On 2010-05-03, Jim Thompson wrote:
I want to do a DC sweep (.DC):

-3.6V to -1V (step size = 2.6V)

-1V to +2V (step size = (100/3)mV)

+2V to +7.2V (step size = 5.2V)

(Lots of data points around the "knee" :-)

That makes a list that PSpice barfs on, claiming "list too long".

Anyone know some gimmicks to get around that limitation?

use two voltage sources that add to give the desired effect in series?



--- news://freenews.netfront.net/ - complaints: ---

On 5 May 2010 12:00:44 GMT, Jasen Betts wrote:

On 2010-05-03, Jim Thompson wrote:
I want to do a DC sweep (.DC):

-3.6V to -1V (step size = 2.6V)

-1V to +2V (step size = (100/3)mV)

+2V to +7.2V (step size = 5.2V)

(Lots of data points around the "knee" :-)

That makes a list that PSpice barfs on, claiming "list too long".

Anyone know some gimmicks to get around that limitation?

use two voltage sources that add to give the desired effect in series?


The problem was the need for different step sizes in different
regions. Reason: Feeding data to another application that can handle
only 100 total data points.

"Solved" as posted at...

Subject: .DC Spice Analysis Quirk... Anyone Know How to Do This?
Date: Mon, 03 May 2010 17:31:10 -0700
Message-ID:

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

The only thing bipartisan in this country is hypocrisy