HSPICE problem

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multi_booter

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vdd d 0 3
*****
r1 out d 10k
m1 out g 0 0 nmos l=1um w=50um
vin g 0 dc 0.9 ac 1

*****
.op
.tf v(out) v(g)

I've the same error
**error** element 0:v has been
referenced but not defined
can you help me?
 

It is not clear what you are trying to do. You have responded to an 8 year old thread about plotting noise in a transimpedance amplifier. I have moved it to its own thread so maybe you could explain what you are trying to do. You have run an operating point and transfer function simulation but I would have thought an AC analysis and NOISE simulation would have been more appropriate, but it is only a guess.

Keith
 

Try

vdd d 0 3
*****
r1 out d 10k
m1 out g 0 0 nmos l=1um w=50um
vin g 0 dc 0.9 ac 1

*****
.op
.tf v(out) vin

(works at least with ngspice)
 
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