To model a circuit containing molecular switches in Hspice

[lokesh garg]

I have the I-V characteristics of the molecular switch(NDR). How do i model the molecular switch , and hence the circuit containing the molecular switch.

 

[keith1200rs]

I don't think resistors can have a voltage dependency, so they are normally models with a JFET, or multiple JFETs in a subcircuit.

Keith.

 

[lokesh garg]

Re: To model a circuit containing molecular switches in Hspi

I21 = -1.1063002e-009*(v2-v1)^4 + 3.6185472e-009*(v2-v1)^3 -3.9434654e-
009*(v2-v1)^2 + 1.4783676e-009*(v2-v1)


I21 is current flowing through node 1 & 2. (v2-v1) is potential difference between node 1 and 2. this is the I-V characteristic curve equation for a resistor...... how to model this equation using JFET and MOSFET's

 

[keith1200rs]

Re: To model a circuit containing molecular switches in Hspi

OK, now I understand what your other post is about. I think you need to sort out the Hspice poly syntax [ use poly(1) ] but then the following device seems to work:

G1 VOUT 0 poly(1) VOUT 0 0 1.4783676e-009 -3.9434654e-009 3.6185472e-009 -1.1063002e-009

It simply uses a single G source with the inputs & outputs shorted.

Keith.