hi all,
Here is below my attached schematic of the 4-quad multiplier using translinear principle in subthreshold operation.
The above two oval marked are the Iin1=3nA , Iin2=3nA ,Vdd=0.4V , Ibias in the left of fig is Ibias=3nA , Vbias (below the FGMOS transistors) has the value Vbias=0.4V . input capacitors in the FGMOS are 150fF each at the input terminals (gate) of the PMOS .All MOS are of the same size.
I am doing the DC analysis(parametric) of the above circuit. for Iin1=-3nA to 3nA. And Iin2=-3nA to 3nA with 1nA steps. I expect to get the waveform(ignore the values of Iin1 and 2 in this image) as below.
But i am getting constant 3nA for all values of Iin3 .
Please correct my circuit where its going wrong and suggest me the answer.
Thanks .
Here is below my attached schematic of the 4-quad multiplier using translinear principle in subthreshold operation.
The above two oval marked are the Iin1=3nA , Iin2=3nA ,Vdd=0.4V , Ibias in the left of fig is Ibias=3nA , Vbias (below the FGMOS transistors) has the value Vbias=0.4V . input capacitors in the FGMOS are 150fF each at the input terminals (gate) of the PMOS .All MOS are of the same size.
I am doing the DC analysis(parametric) of the above circuit. for Iin1=-3nA to 3nA. And Iin2=-3nA to 3nA with 1nA steps. I expect to get the waveform(ignore the values of Iin1 and 2 in this image) as below.
But i am getting constant 3nA for all values of Iin3 .
Please correct my circuit where its going wrong and suggest me the answer.
Thanks .
