eldo_user

Eldo Control Language
Statistical Processing
.define_testbench tb_mc()
.model modres res lot=10% dev=5%
v1 1 0 pwl 0 0 1n 0 2n 3
r1 1 2 modres 1k
c1 2 0 1p
.tran 0 10u
.mc 100
.extract catvect label=rise_time xthres(v(2), 1.5)
.end_define_testbench
.define_task t()
set extract_name = "rise_time"
set extract_res[] = 0
set nbmc = 0
set res = 0
set conv = 0
/* Load the netlist. */
res = _simu_load(name = "tmp/tmp.cir", tb_mc())
if (res.simu_status == 0)
_simu_set_mc_flow()
/* Run nominal. */
res = _simu_run(mode="nom")
if (res.simu_status == 0)
/* Begin Monte-Carlo simulation. */
res = _simu_run(mode="mc 5")
nbmc += 5
while (res.simu_status == 0)
/* Get the results. */
extract_res = _simu_get_extract(extract_name);
/* Display results (+1 to exclude nominal extract). */
print_res(p_nbmc=nbmc,
+ p_extract_res=extract_res[extract_res.imin + 1,
+ extract_res.imax])
/* Stop when it has converged. */
if (mcconv(extract_res,
+ "AVG",
+ "CONFIDENCE") == 1)
break;
endif
/* Prevent infinite loop. */
if (nbmc > 10000)
fprint(stdout, "Failed to converge!\n")
break;
endif
/* Continue Monte-Carlo simulation. */
res = _simu_run(mode="mc 5")
nbmc += 5
endwhile
endif
endif
.end_define_task
.define_task print_res(p_nbmc=10, p_extract_res[] = 0)
set avg_val = avg(p_extract_res)
set std_val = std(p_extract_res)
Eldo® User's Manual, 15.3 1067