Info about switch capacitor simulations

[xz781122]

help!where can i switcap?I am doing sc integrator simulation.

 

[IanP]

switcap pc

I guess you had "switched capacitors" in mind.
In this case here is a link to the relevant web site:
https://www.swarthmore.edu/NatSci/echeeve1/Ref/FilterBkgrnd/SwitchedCap.html

regards ..

 

[hanm]

cad switcap 2

Hi xz781122,u can use spectre simulate switch capacitor circuits.U can do either tran and ac analysis.

hanm

 

[bastos4321]

switcap dos

help!where can i switcap?I am doing sc integrator simulation.

This is the limited DOS version.

Bastos

 

[xwcwc1234]

switcap stack overflow

Hi bastos4321,
Did you have window or workstation version of this software SWITCAP?

 

[paulux]

switcap file example

Any manual or startup guide for SWITCAP available? on DOS or WINDOWS platform?

 

[sorata]

switcap input files

Distribution of SWITCAP has been halted for a long time .
So,just waiting for the guy who had it to share it with us.
i am also looking forwards to the windows version !

 

[eezou]

switcap edaboard

I use spectre or hspice

 

[bastos4321]

how do i simulate in switcap

Any manual or startup guide for SWITCAP available? on DOS or WINDOWS platform?

I have this manual from version 2. Regardin the program. I only have the DOS version. I have designed a 6 order SC filter with it, so for limited circuits is ok.

Bastos

 

[fxxjssc]

switcap software

I am looking for swicap for a long time, do u know which is the newest version.

 

[jinxingsun]

switcap3

You can simulate a sc circuit by spice ,but first ,you should know the storistor model.

 

[bastos4321]

switcap distribution

Hi bastos4321,
Did you have window or workstation version of this software SWITCAP?

No, only the DOS version.

Bastos

 

[xwcwc1234]

switcap winxp

How to use this DOS version SWITCAP? Can anyone explain it more detailed ?

 

[HanGu]

switcap windows

Hi,everyone. From the post above ,Someone suggest to use spice for simulating sc circuit,and the topic is about switcap. So what's the difference between them? which is better?

 

[bastos4321]

Re: about switcap

How to use this DOS version SWITCAP? Can anyone explain it more detailed ?

You just need to see the manual to get the netlist for simulation.

Bastos

Example of a filter.
**********************************************
TITLE: PassBand Filter
OPTIONS;
GRID;
WIDTH80;
END;

TIMING;
PERIOD 10E-6;
CLOCK F1 1 (0/100 50/100);
CLOCK F2 4 (0/100 200/100);
END;

SUBCKT (10 9 5) BIQ1 (K:T1 K:T2 P:B P P:C P:A P:E P:I P:G);
S1 (10 1) T1;
S2 (1 0) T2;
S3 (9 2) T1;
S4 (2 0) T2;
S5 (3 0) T2;
S6 (3 4) T1;
S7 (5 6) T1;
S8 (6 0) T2;
S9 (7 0) T1;
S10 (7 8) T2;
CC (2 3) C;
CD (4 5) D;
CA (6 7) A;
CB (8 9) B;
CE (4 9) E;
CG (1 3) G;
CI (1 8) I;
E2 (5 0 0 4) 1E12;
E1 (9 0 0 8) 1E12;
END;

SUBCKT (11 5 9) BIQ2 (K:T1 K:T2 P:B P P:C P:A P:E P:G P:I P:J);
S1 (11 1) T1;
S2 (1 0) T2;
S3 (9 2) T1;
S4 (2 0) T2;
S5 (3 0) T2;
S6 (3 4) T1;
S7 (5 6) T1;
S8 (6 0) T2;
S9 (7 0) T1;
S10 (7 8) T2;
S11 (10 0) T2;
S12 (10 8) T1;
CC (2 3) C;
CD (4 5) D;
CA (6 7) A;
CB (8 9) B;
CE (4 9) E;
CG (1 4) G;
CJ (1 7) J;
CI (1 10) I;
E2 (5 0 0 4) 1E12;
E1 (9 0 0 8) 1E12;
END;

SUBCKT (11 5 9) BIQ3 (K:T1 K:T2 P:B P P:C P:A P:E P:I P:H);
S1 (11 1) T1;
S2 (1 0) T2;
S3 (9 2) T1;
S4 (2 0) T2;
S5 (3 0) T2;
S6 (3 4) T1;
S7 (5 6) T1;
S8 (6 0) T2;
S9 (7 0) T1;
S10 (7 8) T2;
S11 (10 0) T1;
S12 (10 4) T2;
CC (2 3) C;
CD (4 5) D;
CA (6 7) A;
CB (8 9) B;
CE (4 9) E;
CH (1 10) H;
CI (1 8) I;
E2 (5 0 0 4) 1E12;
E1 (9 0 0 8) 1E12;
END;

CIRCUIT;

X1 (1 2 5) BIQ1 (F1 #F1 7.184044948 8.136768962 1.830773016
1.446867196 3.579903179 1 1);
/* X2 (2 3 6) BIQ2 (F2 #F2 1 1 0.071 0.071196483940716 /*
/* 0.421188531307201 1.038860658191254 0.111308804165231 /*
/* 0.130072195160717); /*
/* X3 (3 4 7) BIQ3 (F2 #F2 1 1 0.11 0.447323459963882 /*
/* 0.934550127390123 0.328390603717677 0.649917927485094);/*

V1 (1 0);
END;

ANALYZE SSS;
INFREQ 100 10E3 LOG 80;
SET V1 AC 1.0 0.0;
SAMPLE OUTPUT HOLD 4 100/100;
PLOT VM(2) VM(5);
PRINT VM(2) VM(5);

END;
END;

Added after 3 hours 30 minutes:

How to use this DOS version SWITCAP? Can anyone explain it more detailed ?

It runs well under WinXP prof.

Bastos

*******************************
D:\CAD\switcap>sw
PC-SWITCAP Version 5.00 Release 10-28-87
(C) Copyright Columbia University 1987
Input: filtro.swc
Output: filtro.out
:::/PC-SWITCAP: program completed.

D:\CAD\switcap>

****** PC-SWITCAP 5.00 (10-28-87) ********* Jan 8 2006 14:03:36 ******

Input Listing

*

 

[xwcwc1234]

Re: about switcap

Hi bastos4321,
I ues this software and command under PC winXP system as you suggested. But I get the error message "stack overflow", why ?

Added after 27 seconds:

Hi bastos4321,
I ues this software and command under PC winXP system as you suggested. But I get the error message "stack overflow", why ?

 

[bastos4321]

Re: about switcap

Hi bastos4321,
I ues this software and command under PC winXP system as you suggested. But I get the error message "stack overflow", why ?

Added after 27 seconds:

Hi bastos4321,
I ues this software and command under PC winXP system as you suggested. But I get the error message "stack overflow", why ?

That I do not know. I'm using WinXP prof. and runs well. I have run that example listed in my previous post and it works nice. My WinXP version is 5.1.2600.

I don't know, but you can tray to set the command line window options. I have used the default configuration of the command line.

Bastos

 

[veille10]

Re: about switcap

it's a bit late but you could try VDMSound Dos Loader.

I had the same problem and it solved it.