[SOLVED] Interconnect Modelling

[Ravinder487]

Hi,I'm new to transmission line modelling. i need some example Hspice codes so as to simulate my transmission line.I should also extract R,L,C of those interconnects.Thanx in advance

 

[erikl]

i need some example Hspice codes so as to simulate my transmission line.

See the demo files under $installdir/demo/hspice/tline/ and $installdir/demo/hspice/twline/ : View attachment HSPICE_User_Guide__Simulation_and_Analysis_p842.pdf

 

[Ravinder487]

* RLC CIRCUIT
.include '45nm_NMOS_bulk17963.md'
.include '45nm_PMOS_bulk29891.md'
C1 in1 gnd 10p
L1 in1 n1 10n
R1 n1 out1 100
C11 out1 gnd 10p
C12 in1 in2 15f
C21 out1 out2 15f
C2 in2 gnd 10p
L2 in2 n2 10n
R2 n2 out2 100
C22 out2 gnd 10p
C23 in2 in3 15f
C32 out2 out3 15f
M12 L1 L2 5n
C3 in3 gnd 10p
L3 in3 n3 10n
R3 n3 out3 100
C33 out3 gnd 10p
C34 in3 in4 15f
C43 out3 out4 15f
M23 L2 L3 5n
M13 L1 L3 5n
C4 in4 gnd 10p
L4 in4 n4 10n
R4 n4 out4 100
C44 out4 gnd 10p
C45 in4 in5 15f
C54 out4 out5 15f
M34 L3 L4 5n
M24 L2 L4 5n
M14 L1 L4 5n
C5 in5 gnd 10p
L5 in5 n5 10n
R5 n5 out5 100
C55 out5 gnd 10p
M45 L4 L5 5n
M35 L3 L5 5n
M25 L2 L5 5n
M15 L1 L5 5n
vin1 in1 gnd pulse(0 1.1 0u 4p 4p 0.5u 1u)
vin2 in2 gnd pulse(0 1.1 0u 4p 4p 0.5u 1u)
vin3 in3 gnd pulse(0 1.1 0u 4p 4p 0.5u 1u)
vin4 in4 gnd pulse(0 1.1 0u 4p 4p 0.5u 1u)
vin5 in5 gnd pulse(0 1.1 0u 4p 4p 0.5u 1u)
.TRAN 0.01u 2u
.plot TRAN v(in1) v(in2) v(in3) v(in4) v(in5) v(out1) v(out2) v(out3) v(out4)
v(out5)
.measure tran input1 trig v(in1) val=0.5 rise=1 targ v(out1) val=0.5 fall=1
.measure tran input2 trig v(in2) val=0.5 rise=1 targ v(out2) val=0.5 fall=1
.measure tran input3 trig v(in3) val=0.5 rise=1 targ v(out3) val=0.5 fall=1
.measure tran input4 trig v(in4) val=0.5 rise=1 targ v(out4) val=0.5 fall=1
.measure tran input5 trig v(in5) val=0.5 rise=1 targ v(out5) val=0.5 fall=1
.option list post node
.end

H spice is giving me error as "independ source element node is missing"
could anybody trace out what's the problem in my Net-list

 

[erikl]

H spice is giving me error as "independ source element node is missing"

v(out5) is seen as the independent source element. It needs a + sign in front to mark the continuation line.

And I guess the inductors should begin with an L , not with M (reserved for MOSFET).

 

[Ravinder487]

Thanks for ur concern.But I guess we should use M for defining mutual inductance,correct me if I'm wrong.

 

[erikl]

I guess we should use M for defining mutual inductance,correct me if I'm wrong.

AFAIK the Mutual Inductor Element has to start with a K and needs a lot more parameters (for the interacting inductors), s. this page from the View attachment HSPICE_Device_Models_Quick_Reference_p6.pdf .