simulating circuits at different temperatures on the same te

Dear all,

Assuming I have a testbench with 3 circuits (circuit1, circuit2 and
circuit3). I would like to simulate circuit1 and circuit2 at two
different temperatures and use another circuit (circuit3) to analyse
the data coming from the initial two. The operating temperature of
circuit3 is also different from circuit1 and circuit2. Can this be
possible with cadence tools (graphically and otherwise) and if yes,
how ?

Thanks and Regards,
Naveen.

 

[Andrew Beckett]

solidrepellent@gmail.com wrote, on 09/09/08 17:22:

Dear all,

Assuming I have a testbench with 3 circuits (circuit1, circuit2 and
circuit3). I would like to simulate circuit1 and circuit2 at two
different temperatures and use another circuit (circuit3) to analyse
the data coming from the initial two. The operating temperature of
circuit3 is also different from circuit1 and circuit2. Can this be
possible with cadence tools (graphically and otherwise) and if yes,
how ?

Thanks and Regards,
Naveen.

This can be done in IC612, with multi-technology support. Not only can you
specify the temperature separately for different blocks - you can also specify
the models separately - useful if the circuits are on different technologies.

You can also see how to do this by looking in the Spectre User Guide in MMSIM62
or MMSIM70. Search for "multi" in the User Guide in cdnshelp, and you'll find
the section on multi-technology support. Note that it requires the netlist to be
lexically scoped - in other words, you need all the subckts underneath circuit1
to be contained within the circuit1 subckt, along with the simulation options
for that block. ADE in IC5141 can't produce this lexically-scoped netlist, but
ADE GXL in IC61X can.

Alternatively, on primitive devices you can specify the "trise" parameter, but
you'd have to specify that on each and every component...

Regards,

Andrew.