DC Voltage source with inverse polarity.1- how connect the source (DC or AC?) of input to Gate terminales of two input mosfets?
Insert Current Probe between resistor and drain.2- I have two node for output.
now what i must connect to this nodes to see Gm curve?
Yes.1- you mean that i use two DC voltage? put a Dc supply in Gate of M1 and another DC supply with opposite polarity in Gate of M2?
I can not understand what you want to mean at all.2- is it true that i put a resistor between drain of M1(vo1) and drain of M2(vo2)?
Yes.and now use the current of this resistor for plot Gm=iout/vid?
No.3- how must be the value of this resistor?
is it important in accuracy of Gm curve?
If Vds is not so small, Gm will not be much different.this resistant be considered as a load for OTA.
and it's different values give me different Gm curevs..!!
Show me revised schematic.I use the current probe in series of this resistance. my work is wrong?
I don't think so.Transconductance is defined for shorted output.
Shorting Vout1 and Vout2 with a current probe is the appropriate way to measure conductance.
Wrong.6- in graphic window make two equation: (vid=vip-vin & Gm=i prob/vid) that i prob is the current prob in stage.2.
I don't think so.
Wrong.
First, your gate voltage is not appropriate.
Second, can you understand Gm ?
Gm is a derivative.
Wrong.- Gm is the Gain of transconductance= iout/Vid.
Surely see my figures which are ADS schematic and results, where I did DC and AC Analyses.if you have another defination for this case of curve that i need, please explain step by step and.
No one can enjoy your very wrong explanations.enjoy your discovery.. ! :clap:;-)
There is no difference between BipBJT and MOSFET.* in your picture that the transistores are bipolar, The OTA is single ended.
Yes.* in picture that you draw in ADS window the OTA is fully differential.
you believe that also for differential output we must subtract the current of two mosfet?
Yes.with No shorting output nodes
No.and No load putting between output nodes
and No measuering the current of this load?
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