Mos Current mode logic

[Neetha Patil]

Hello sir
I am doing thesis on Arichetecture of Dynamic Current Mode Logic , so i have to create MCML symbol for it . How to simulate a MCML Symbol and how can be it conneected. i am attaching some pics
this is the DYCML arichetecture



the above schmatic is MCML Inverter and from this i created Symbol as shown below

In symbol can we connect pins as in schematic ? or else have to take VPulse as inputs? i am not getting exact result for the symbol ,getting spikes in output .

why like that ,please help me sir
Thank You in Advance

 

[faizalism]

Can I see your testbench? How you connect vdd?

 

[Neetha Patil]

Can I see your testbench? How you connect vdd?

i given vdd 2.5 v, vdc 1.2 v and Vref also 1.2 in stimuli

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for symbol simulation why to use VDC,VDD, gnd a seperate circuit ? for my MCML symbol if i use this i am not getting result getting fatal error: the following branches form a loop of rigid branches (shorts) when added to the circuit V4 : p (from vdd! to 0 )

 

[faizalism]

when I see your testbench, your Vdd=1.2V...and you purposely put A/Abar input (=1.8V) higher than vdd?