How to change logic levels in LTSPice?

J

Joerg

Guest
First time for me to do mixed mode sims on LTSpice. How do you change
the voltage level of behavioral logic such as "AND" from the default 1V
to some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:MZVvk.20558$mh5.18509@nlpi067.nbdc.sbc.com...
Helmut Sennewald wrote:
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change
the voltage level of behavioral logic such as "AND" from the default 1V
to some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be
shown.
Enter the parameter(s) into any field from "Value" to "SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2


Thanks, Helmut. I just got mail from a reader of these groups and he
suggested the same. Works!


Don't connect anything to unused inputs!


That's what I tried at first. Well, at least no smoke came out of the PC.
In real life it would have been phssst ... BANG :)


You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devices/


I'll have to see whether I can get that group through gmane. The Yahoo
interface is such a pain.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
Click to expand...
Hello Joerg,

I highly recommend to use a web browser. There are so many goodies
on the group's webpage. You would miss them all if you use
any simple message viewer.
After you have registered the for the group, set your email account to "No
email".
Otherwise your email account would be flooded with 500 messages per month.

http://tech.groups.yahoo.com/group/LTspice/

Best regards,
Helmut
 
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change the
voltage level of behavioral logic such as "AND" from the default 1V to
some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
Click to expand...
Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be shown.
Enter the parameter(s) into any field from "Value" to "SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2

Don't connect anything to unused inputs!

You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devices/

Best regards,
Helmut
 
Helmut Sennewald wrote:
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change the
voltage level of behavioral logic such as "AND" from the default 1V to
some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be shown.
Enter the parameter(s) into any field from "Value" to "SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2
Click to expand...
Thanks, Helmut. I just got mail from a reader of these groups and he
suggested the same. Works!


Don't connect anything to unused inputs!
Click to expand...
That's what I tried at first. Well, at least no smoke came out of the
PC. In real life it would have been phssst ... BANG :)


You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devices/
Click to expand...
I'll have to see whether I can get that group through gmane. The Yahoo
interface is such a pain.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Helmut Sennewald wrote:
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:MZVvk.20558$mh5.18509@nlpi067.nbdc.sbc.com...
Helmut Sennewald wrote:
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change
the voltage level of behavioral logic such as "AND" from the default 1V
to some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be
shown.
Enter the parameter(s) into any field from "Value" to "SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2

Thanks, Helmut. I just got mail from a reader of these groups and he
suggested the same. Works!


Don't connect anything to unused inputs!

That's what I tried at first. Well, at least no smoke came out of the PC.
In real life it would have been phssst ... BANG :)


You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devices/

I'll have to see whether I can get that group through gmane. The Yahoo
interface is such a pain.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

I highly recommend to use a web browser. There are so many goodies
on the group's webpage. You would miss them all if you use
any simple message viewer.
After you have registered the for the group, set your email account to "No
email".
Otherwise your email account would be flooded with 500 messages per month.

http://tech.groups.yahoo.com/group/LTspice/
Click to expand...
Well, I am signed up since a while. Another ID and password to remember,
sometimes it won't recognize me, and so on. If at least the message
board itself would be a newsgroup. So much more efficient.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
 
Kris Krieger wrote:
"Helmut Sennewald" <helmutsennewald@t-online.de> wrote in
news:g9p90l$295$03$1@news.t-online.com:

"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change
the voltage level of behavioral logic such as "AND" from the default 1V
to some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be
shown. Enter the parameter(s) into any field from "Value" to
"SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2

Don't connect anything to unused inputs!

You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devic
es/


The link requires a UID and password...
Click to expand...

Just like all other private Yahoo groups. You need a Yahoo e-mail
address, and to request to join the group. No big deal, if the
moderators are on the ball.


--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
 
On Wed, 3 Sep 2008 20:56:25 +0200, "Helmut Sennewald"
<helmutsennewald@t-online.de> wrote:

"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:MZVvk.20558$mh5.18509@nlpi067.nbdc.sbc.com...
Helmut Sennewald wrote:
"Joerg" <notthisjoergsch@removethispacbell.net> schrieb im Newsbeitrag
news:GVUvk.18978$LG4.3847@nlpi065.nbdc.sbc.com...
First time for me to do mixed mode sims on LTSpice. How do you change
the voltage level of behavioral logic such as "AND" from the default 1V
to some other voltage?

Maybe even other parameter such as rise/fall times, prop delays?

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

Right-mouse-click on the device in your schematic. A dialog will be
shown.
Enter the parameter(s) into any field from "Value" to "SpiceLine2".

Vhigh=5 Vlow=0 Ref=1.5
Trise=5n Tfall=5n Td=5n

"Ref" is the threshold. Default is (Vhigh+Vlow)/2


Thanks, Helmut. I just got mail from a reader of these groups and he
suggested the same. Works!


Don't connect anything to unused inputs!


That's what I tried at first. Well, at least no smoke came out of the PC.
In real life it would have been phssst ... BANG :)


You want or need examples?
http://tech.groups.yahoo.com/group/LTspice/files/%20Tut/Digital%20A-Devices/


I'll have to see whether I can get that group through gmane. The Yahoo
interface is such a pain.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Hello Joerg,

I highly recommend to use a web browser. There are so many goodies
on the group's webpage. You would miss them all if you use
any simple message viewer.
After you have registered the for the group, set your email account to "No
email".
Otherwise your email account would be flooded with 500 messages per month.

http://tech.groups.yahoo.com/group/LTspice/

Best regards,
Helmut
Click to expand...
What a nutter. I use a real news reader and i do not have any problem
wading through 1000 posts a month. They do not appear in my email
inbasket. But about 200 spams a month do arrive past my ISP's
filters, but they are not the same.
 
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