port in cadence spectre for differential circuits

[viperpaki007]

Hi,

How can i use port from analogLib in cadence spectre. If i have a differential circuit of 100 ohm differential impedance, can i just directly connect port (by putting R=100 in settings) to differential input of circuit?. Will this give right results?

BR

 

[dick_freebird]

Never used that feature. If I want to probe guts, I put
a vcvs and resistor, ground referred, and a schbpin to
bring the net out (if I don't just want to descend and
probe). You could also assign a unique global net name
(if this is a one-off block) and place a same-named
wire stub at any level you like.

 

[sarge]

I think if you don't concerned about dc level, you'll get right results.

If dc level is important issue for your circuit, you can use ideal balun from rfLib.

 

[BigBoss]

Yes, if you connect "port" elements as a differential source, it will work.