diff options
Diffstat (limited to 'Windows/spice/examples/TransmissionLines/ltra3_2_line.sp')
| -rw-r--r-- | Windows/spice/examples/TransmissionLines/ltra3_2_line.sp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/Windows/spice/examples/TransmissionLines/ltra3_2_line.sp b/Windows/spice/examples/TransmissionLines/ltra3_2_line.sp new file mode 100644 index 00000000..1a756520 --- /dev/null +++ b/Windows/spice/examples/TransmissionLines/ltra3_2_line.sp @@ -0,0 +1,98 @@ +MOSdriver -- 24inch 2 lossy lines LTRA model -- C load + +m1 0 268 299 0 mn0p9 w = 18.0u l=1.0u +m2 299 267 748 0 mn0p9 w = 18.0u l=1.0u +m3 0 168 648 0 mn0p9 w = 18.0u l=0.9u +m4 1 268 748 1 mp1p0 w = 36.0u l=1.0u +m5 1 267 748 1 mp1p0 w = 36.0u l=1.0u +m6 1 168 648 1 mp1p0 w = 36.0u l=1.0u + +* +CN648 648 0 0.025398e-12 +CN651 651 0 0.007398e-12 +CN748 748 0 0.025398e-12 +CN751 751 0 0.009398e-12 +CN299 299 0 0.005398e-12 +* +* Subcircuit test +* test is a subcircuit that models a 2-conductor transmission line with +* the following parameters: l=9.13e-09, c=2.75e-13, r=0.2, g=0, +* inductive_coeff_of_coupling k=0.36144, inter-line capacitance cm=9e-14, +* length=24. Derived parameters are: lm=3.29995e-09, ctot=3.65e-13. +* +* It is important to note that the model is a simplified one - the +* following assumptions are made: 1. The self-inductance l, the +* self-capacitance ctot (note: not c), the series resistance r and the +* parallel capacitance g are the same for all lines, and 2. Each line +* is coupled only to the two lines adjacent to it, with the same +* coupling parameters cm and lm. The first assumption implies that edge +* effects have to be neglected. The utility of these assumptions is +* that they make the sL+R and sC+G matrices symmetric, tridiagonal and +* Toeplitz, with useful consequences (see "Efficient Transient +* Simulation of Lossy Interconnect", by J.S. Roychowdhury and +* D.O Pederson, Proc. DAC 91). + +* It may be noted that a symmetric two-conductor line is +* represented accurately by this model. + +* Subckt node convention: +* +* |--------------------------| +* 1-----| |-----n+1 +* 2-----| |-----n+2 +* : | n-wire multiconductor | : +* : | line | : +* n-1-----|(node 0=common gnd plane) |-----2n-1 +* n-----| |-----2n +* |--------------------------| + + +* Lossy line models +.model mod1_test ltra rel=1.2 nocontrol r=0.2 l=5.83005279316e-09 g=0 c=4.55000000187e-13 len=24 +.model mod2_test ltra rel=1.2 nocontrol r=0.2 l=1.24299471863e-08 g=0 c=2.75000000373e-13 len=24 + +* subcircuit m_test - modal transformation network for test +.subckt m_test 1 2 3 4 +v1 5 0 0v +v2 6 0 0v +f1 0 3 v1 0.707106779721 +f2 0 3 v2 -0.707106782652 +f3 0 4 v1 0.707106781919 +f4 0 4 v2 0.707106780454 +e1 7 5 3 0 0.707106780454 +e2 1 7 4 0 0.707106782652 +e3 8 6 3 0 -0.707106781919 +e4 2 8 4 0 0.707106779721 +.ends m_test + +* Subckt test +.subckt test 1 2 3 4 +x1 1 2 5 6 m_test +o1 5 0 7 0 mod1_test +o2 6 0 8 0 mod2_test +x2 3 4 7 8 m_test +.ends test +* +x1 648 748 651 751 test +* +* +vdd 1 0 DC 5.0 +VK 267 0 DC 5.0 +* +VS1 168 0 PULSE (0 5 15.9N 0.2N 0.2N 15.8N 60N) +VS2 268 0 PULSE (0 5 15.9N 0.2N 0.2N 15.8N 60N) +* +.control +TRAN 0.2N 47.9NS +PLOT v(648) v(651) v(751) +.endc +* +.model mn0p9 nmos LEVEL=1 vto=0.8V kp=48u gamma=0.3 phi=0.55 lambda=0.0 ++ PHI=0.55 LAMBDA=0.00 CGSO=0 CGDO=0 CGBO=0 ++ CJ=0 CJSW=0 TOX=18000N NSUB=1E16 LD=0.0U + +.model mp1p0 pmos LEVEL=1 vto=-0.8V kp=21u gamma=0.45 phi=0.61 lambda=0.0 ++ PHI=0.61 LAMBDA=0.00 CGSO=0 CGDO=0 CGBO=0 ++ CJ=0 CJSW=0 TOX=18000N NSUB=3E16 LD=0.0U + +.END |