eldo_user

Eldo Control Language
Library of Functions for Tasks
.define_testbench mos (vgs_val=1, vds_val=1, w_val=1u, l_val=1u)
m1 d g s s n w=w_val l=l_val
vgs g s vgs_val
vds d s vds_val
.connect d 0
.dc
.extract dc label=m1_ids '-i(vds)'
.extract dc label=m1_mode opmode(m1)
.end_define_testbench
.define_task plot_ids_sat_w_l
set w_res [] = 0
set l_res [] = 0
set ids_sat_w_res [] = 0
set ids_sat_l_res [] = 0
set w_ids_sat_w = 0
set w_ids_sat_l = 0
set w = 0
set l = 0
set vds = 0
set vds_min = 0
set vds_max = 5
set m1_ids = 0
set m1_mode = ""
set i = 0
set iter = 0
/**
* Compute ids_sat by dichotomy for many values of w.
*/
step (type = lin, param = w, start = 1u, stop = 5u, n = 20)
i++
w_res[i] = w
/* Check bounds. */
vds_min = 0
vds_max = 5
simulation(mos(w_val = w, vds_val=vds_min), m1_mode = @m1_mode, m1_ids
= @m1_ids)
if (m1_mode != "linear")
fprint(stdout, "Failed to find ids_sat for w=%em because with
vds=%eV, opmode(m1)=%s\n", w, vds_min, m1_mode)
return -1
endif
simulation(mos(w_val = w, vds_val=vds_max), m1_mode = @m1_mode, m1_ids
= @m1_ids)
if (m1_mode != "saturation")
fprint(stdout, "Failed to find ids_sat for w=%em because with
vds=%eV, opmode(m1)=%s\n", w, vds_max, m1_mode)
return -1
endif
/* Dichotomy. */
982
Eldo® User's Manual, 15.3