Stats

  • Locked Locked
  • Replies 7
  • Subscribers 127
  • Views 20101
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Problem simulating Spice Netlist with Spectre

Oriba

Hello,

Recently i tried to simulate the following Spice netList with Spectre:( by : spectre filename.sp)

 simulator lang = spice
.SUBCKT modelmemristor plus minus PARAMS:

+phio=0.95 Lm=0.0998 w1=0.1261 foff=3.5e-6
+ioff=115e-6 aoff=1.2 fon=40e-6 ion=8.9e-6
+aon=1.8 b=500e-6 wc=107e-3
G1 plus internal value={sgn(V(x))*(1/V(dw))^2*0.0617*(V(phiI)*exp(-V(B)*V(sr))-(V(phiI)+abs(V(x)))*exp(-V(B)*V(sr2)))}
Esr sr 0 value={sqrt(V(phiI))}
Esr2 sr2 0 value={sqrt(V(phiI)+abs(V(x)))}
Rs internal minus 215
Eg x 0 value={V(plus)-V(internal)}
Elamda Lmda 0 value={Lm/V(w)}
Ew2 w2 0 value={w1+V(w)-(0.9183/(2.85+4*V(Lmda)-2*abs(V(x))))}
EDw dw 0 value={V(w2)-w1}
EB B 0 value={10.246*V(dw)}
ER R 0 value={(V(w2)/w1)*(V(w)-w1)/(V(w)-V(w2))}
EphiI phiI 0 value={phio-abs(V(x))*((w1+V(w2))/(2*V(w)))-1.15*V(Lmda)*V(w)*log(V(R))/V(dw)}
C1 w 0 1e-9 IC=1.2
R w 0 1e8MEG
Ec c 0 value={abs(V(internal)-V(minus))/215}
Emon1 mon1 0 value={((V(w)-aoff)/wc)-(V(c)/b)}
Emon2 mon2 0 value={(aon-V(w))/wc-(V(c)/b)}
Goff 0 w value={foff*sinh(stp(V(x))*V(c)/ioff)*exp(-exp(V(mon1))-V(w)/wc)}
Gon w 0 value={fon*sinh(stp(-V(x))*V(c)/ion)*exp(-exp(V(mon2))-V(w)/wc)}
.ENDS modelmemristor

 When doing so, i got the following errors:

 Error found by spectre in `modelmemristor', during circuit read-in.
    ERROR (SFE-1815): "Mem.sp" 2: Missing value for parameter `G1' in
        subcircuit definition `modelmemristor'.
    ERROR (SFE-662): "Mem.sp" 2: Badly formed subcircuit definition
        `modelmemristor'.

I looked a littel bit and tried to change the G1 parameter to the following:

G1 plus internal 0 xx value={sgn(V(x))*(1/V(dw))^2*0.0617*(V(phiI)*exp(-V(B)*V(sr))-(V(phiI)+abs(V(x)))*exp(-V(B)*V(sr2)))}
Exx xx 0 1

But still same Errors..
Can anyway know what is the problem??
My final goal is to attach this netlist to a symbol so i can use it in virtuoso.
Thanks

Parents

  • Thanks agian Andrew!

    I think it help and the problem was that i used the first line.
    now the only thing i get is : ERROR (SPECTRE-4080): There are no components in the circuit.
    which i think is ok since i tried to compile only this subckt.

    Now as i said i dont have a netlist yet becasue what i want to do is to create a symbol in virtuoso so this subckt can be used as a component. (because it is more Convenient for later)
    I tried 2 different ways:
    1. add the spectre subckt to verilog A but apparently i dont do it right.2. I tried to add from analogLib ascasubckt which is connected to my subckt.

    both ways were unsuccesfull.
    I would prefer to know how to connect it to verilog and activate it .  but also the a direct way to use it in virtuoso is good for me.

Reply

  • Thanks agian Andrew!

    I think it help and the problem was that i used the first line.
    now the only thing i get is : ERROR (SPECTRE-4080): There are no components in the circuit.
    which i think is ok since i tried to compile only this subckt.

    Now as i said i dont have a netlist yet becasue what i want to do is to create a symbol in virtuoso so this subckt can be used as a component. (because it is more Convenient for later)
    I tried 2 different ways:
    1. add the spectre subckt to verilog A but apparently i dont do it right.2. I tried to add from analogLib ascasubckt which is connected to my subckt.

    both ways were unsuccesfull.
    I would prefer to know how to connect it to verilog and activate it .  but also the a direct way to use it in virtuoso is good for me.

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.