Hi everyone,
I want to simulate a ring oscillator under process variation with Monte carlo in hspice. I write this, but it has an error, what's my mistake?
*CMOS Ring Oscillator
V1 vdd 0 3V
V2 vss 0 0V
.subckt inv vdd vss in out
Mp1 vdd in out vdd pmos l=0.35u w=20.0u
Mn1 vss in out vss nmos l=0.35u w=10.0u
Cload out vss 100f
.ends
*5 stage ring
x1 vdd vss 1 2 inv
x2 vdd vss 2 3 inv
x3 vdd vss 3 4 inv
x4 vdd vss 4 5 inv
x5 vdd vss 5 1 inv
* Beta Version
* PTM 22nm NMOS
.model nmos nmos level = 54
+version = 4.0 binunit = 1 paramchk= 1 mobmod = 0
+capmod = 2 igcmod = 1 igbmod = 1 geomod = 1
+diomod = 1 rdsmod = 0 rbodymod= 1 rgatemod= 1
+permod = 1 acnqsmod= 0 trnqsmod= 0
+tnom = 27 toxe = 1.2e-9 toxp = 0.9e-9 toxm = 1.2e-9
+dtox = 0.3e-9 epsrox = 3.9 wint = 5e-009 lint = 2.0e-009
+ll = 0 wl = 0 lln = 1 wln = 1
+lw = 0 ww = 0 lwn = 1 wwn = 1
+lwl = 0 wwl = 0 xpart = 0 toxref = 1.2e-9
+xl = -9e-9
+vth0 = 0.5118 k1 = 0.4 k2 = 0.0 k3 = 0
+k3b = 0 w0 = 2.5e-006 dvt0 = 1 dvt1 = 2
+dvt2 = 0 dvt0w = 0 dvt1w = 0 dvt2w = 0
+dsub = 0.078 minv = 0.05 voffl = 0 dvtp0 = 1.0e-011
+dvtp1 = 0.1 lpe0 = 0 lpeb = 0 xj = 7.2e-009
+ngate = 2e+020 ndep = 12e+018 nsd = 2e+020 phin = 0
+cdsc = 0.000 cdscb = 0 cdscd = 0 cit = 0
+voff = -0.13 nfactor = 2.3 eta0 = 0.0045 etab = 0
+vfb = -1.058 u0 = 0.0181 ua = -5e-010 ub = 1.7e-018
+uc = 0 vsat = 200000 a0 = 1.0 ags = 0
+a1 = 0 a2 = 1.0 b0 = 0 b1 = 0
+keta = 0.04 dwg = 0 dwb = 0 pclm = 0.06
+pdiblc1 = 0.001 pdiblc2 = 0.001 pdiblcb = -0.005 drout = 0.5
+pvag = 1e-020 delta = 0.01 pscbe1 = 8.14e+008 pscbe2 = 1e-007
+fprout = 0.2 pdits = 0.01 pditsd = 0.23 pditsl = 2.3e+006
+rsh = 5 rdsw = 130 rsw = 75 rdw = 75
+rdswmin = 0 rdwmin = 0 rswmin = 0 prwg = 0
+prwb = 0 wr = 1 alpha0 = 0.074 alpha1 = 0.005
+beta0 = 30 agidl = 0.0002 bgidl = 2.1e+009 cgidl = 0.0002
+egidl = 0.8
+aigbacc = 0.012 bigbacc = 0.0028 cigbacc = 0.002
+nigbacc = 1 aigbinv = 0.014 bigbinv = 0.004 cigbinv = 0.004
+eigbinv = 1.1 nigbinv = 3 aigc = 0.012 bigc = 0.0028
+cigc = 0.002 aigsd = 0.012 bigsd = 0.0028 cigsd = 0.002
+nigc = 1 poxedge = 1 pigcd = 1 ntox = 1
+xrcrg1 = 12 xrcrg2 = 5
+cgso = 0.65e-010 cgdo = 0.65e-010 cgbo = 2.56e-011 cgdl = 2.653e-10
+cgsl = 2.653e-10 ckappas = 0.03 ckappad = 0.03 acde = 1
+moin = 15 noff = 0.9 voffcv = 0.02
+kt1 = -0.11 kt1l = 0 kt2 = 0.022 ute = -1.5
+ua1 = 4.31e-009 ub1 = 7.61e-018 uc1 = -5.6e-011 prt = 0
+at = 33000
+fnoimod = 1 tnoimod = 0
+jss = 0.0001 jsws = 1e-011 jswgs = 1e-010 njs = 1
+ijthsfwd= 0.01 ijthsrev= 0.001 bvs = 10 xjbvs = 1
+jsd = 0.0001 jswd = 1e-011 jswgd = 1e-010 njd = 1
+ijthdfwd= 0.01 ijthdrev= 0.001 bvd = 10 xjbvd = 1
+pbs = 1 cjs = 0.0005 mjs = 0.5 pbsws = 1
+cjsws = 5e-010 mjsws = 0.33 pbswgs = 1 cjswgs = 3e-010
+mjswgs = 0.33 pbd = 1 cjd = 0.0005 mjd = 0.5
+pbswd = 1 cjswd = 5e-010 mjswd = 0.33 pbswgd = 1
+cjswgd = 5e-010 mjswgd = 0.33 tpb = 0.005 tcj = 0.001
+tpbsw = 0.005 tcjsw = 0.001 tpbswg = 0.005 tcjswg = 0.001
+xtis = 3 xtid = 3
+dmcg = 0e-006 dmci = 0e-006 dmdg = 0e-006 dmcgt = 0e-007
+dwj = 0.0e-008 xgw = 0e-007 xgl = 0e-008
+rshg = 0.4 gbmin = 1e-010 rbpb = 5 rbpd = 15
+rbps = 15 rbdb = 15 rbsb = 15 ngcon = 1
* PTM 22nm PMOS
.model pmos pmos level = 54
+version = 4.0 binunit = 1 paramchk= 1 mobmod = 0
+capmod = 2 igcmod = 1 igbmod = 1 geomod = 1
+diomod = 1 rdsmod = 0 rbodymod= 1 rgatemod= 1
+permod = 1 acnqsmod= 0 trnqsmod= 0
+tnom = 27 toxe = 1.2e-009 toxp = 0.9e-009 toxm = 1.2e-009
+dtox = 0.3e-9 epsrox = 3.9 wint = 5e-009 lint = 2.0e-009
+ll = 0 wl = 0 lln = 1 wln = 1
+lw = 0 ww = 0 lwn = 1 wwn = 1
+lwl = 0 wwl = 0 xpart = 0 toxref = 1.2e-009
+xl = -9e-9
+vth0 = -0.372 k1 = 0.4 k2 = -0.01 k3 = 0
+k3b = 0 w0 = 2.5e-006 dvt0 = 1 dvt1 = 2
+dvt2 = -0.032 dvt0w = 0 dvt1w = 0 dvt2w = 0
+dsub = 0.1 minv = 0.05 voffl = 0 dvtp0 = 1e-011
+dvtp1 = 0.05 lpe0 = 0 lpeb = 0 xj = 7.2e-009
+ngate = 2e+020 ndep = 4.40e+018 nsd = 2e+020 phin = 0
+cdsc = 0.000 cdscb = 0 cdscd = 0 cit = 0
+voff = -0.13 nfactor = 2.3 eta0 = 0.0037 etab = 0
+vfb = -1.058 u0 = 0.00230 ua = -0.5e-009 ub = 1.6e-018
+uc = 0 vsat = 78000 a0 = 1.0 ags = 1e-020
+a1 = 0 a2 = 1 b0 = 0 b1 = 0
+keta = -0.047 dwg = 0 dwb = 0 pclm = 0.1
+pdiblc1 = 0.001 pdiblc2 = 0.001 pdiblcb = 3.4e-008 drout = 0.6
+pvag = 1e-020 delta = 0.01 pscbe1 = 8.14e+008 pscbe2 = 9.58e-007
+fprout = 0.2 pdits = 0.08 pditsd = 0.23 pditsl = 2.3e+006
+rsh = 5 rdsw = 130 rsw = 65 rdw = 65
+rdswmin = 0 rdwmin = 0 rswmin = 0 prwg = 0
+prwb = 0 wr = 1 alpha0 = 0.074 alpha1 = 0.005
+beta0 = 30 agidl = 0.0002 bgidl = 2.1e+009 cgidl = 0.0002
+egidl = 0.8
+aigbacc = 0.012 bigbacc = 0.0028 cigbacc = 0.002
+nigbacc = 1 aigbinv = 0.014 bigbinv = 0.004 cigbinv = 0.004
+eigbinv = 1.1 nigbinv = 3 aigc = 0.69 bigc = 0.0012
+cigc = 0.0008 aigsd = 0.0087 bigsd = 0.0012 cigsd = 0.0008
+nigc = 1 poxedge = 1 pigcd = 1 ntox = 1
+xrcrg1 = 12 xrcrg2 = 5
+cgso = 0.65e-010 cgdo = 0.65e-010 cgbo = 2.56e-011 cgdl = 2.653e-10
+cgsl = 2.653e-10 ckappas = 0.03 ckappad = 0.03 acde = 1
+moin = 15 noff = 0.9 voffcv = 0.02
+kt1 = -0.11 kt1l = 0 kt2 = 0.022 ute = -1.5
+ua1 = 4.31e-009 ub1 = 7.61e-018 uc1 = -5.6e-011 prt = 0
+at = 33000
+fnoimod = 1 tnoimod = 0
+jss = 0.0001 jsws = 1e-011 jswgs = 1e-010 njs = 1
+ijthsfwd= 0.01 ijthsrev= 0.001 bvs = 10 xjbvs = 1
+jsd = 0.0001 jswd = 1e-011 jswgd = 1e-010 njd = 1
+ijthdfwd= 0.01 ijthdrev= 0.001 bvd = 10 xjbvd = 1
+pbs = 1 cjs = 0.0005 mjs = 0.5 pbsws = 1
+cjsws = 5e-010 mjsws = 0.33 pbswgs = 1 cjswgs = 3e-010
+mjswgs = 0.33 pbd = 1 cjd = 0.0005 mjd = 0.5
+pbswd = 1 cjswd = 5e-010 mjswd = 0.33 pbswgd = 1
+cjswgd = 5e-010 mjswgd = 0.33 tpb = 0.005 tcj = 0.001
+tpbsw = 0.005 tcjsw = 0.001 tpbswg = 0.005 tcjswg = 0.001
+xtis = 3 xtid = 3
+dmcg = 0e-006 dmci = 0e-006 dmdg = 0e-006 dmcgt = 0e-007
+dwj = 0.0e-008 xgw = 0e-007 xgl = 0e-008
+rshg = 0.4 gbmin = 1e-010 rbpb = 5 rbpd = 15
+rbps = 15 rbdb = 15 rbsb = 15 ngcon = 1
.Variation
.Global_Variation
Parameter var=N() Y='0.8 + 0.6 * var' Z='0.5 + 0.6 * var'
Nmos nch
+ tox =Perturb('Z')
+ leff=Perturb('Y')
+ vth0=Perturb('-6.2E-12*Y')
Pmos pch
+ tox =Perturb('0.9*Z')
+ leff=Perturb('0.81*Y')
+ vth0=Perturb('-6.2E-12*Y')
.End_Global_Variation
.Local_Variation
Parameter var=N() Y='0.7 + 0.6 * var' Z='0.5 + 0.6 * var'
Nmos nch
+ tox =Perturb('Z')
+ leff=Perturb('Y')
+ vth0=Perturb('-6.2E-12*Y')
Pmos pch
+ tox =Perturb('0.9*Z')
+ leff=Perturb('0.81*Y')
+ vth0=Perturb('-6.2E-12*Y')
.End_Local_Variation
.End_Variation
.TRAN step=0.5 start=1 stop=20 monte=10
.print v(1) v(2) v(3) v(4)
.end
I want to simulate a ring oscillator under process variation with Monte carlo in hspice. I write this, but it has an error, what's my mistake?
*CMOS Ring Oscillator
V1 vdd 0 3V
V2 vss 0 0V
.subckt inv vdd vss in out
Mp1 vdd in out vdd pmos l=0.35u w=20.0u
Mn1 vss in out vss nmos l=0.35u w=10.0u
Cload out vss 100f
.ends
*5 stage ring
x1 vdd vss 1 2 inv
x2 vdd vss 2 3 inv
x3 vdd vss 3 4 inv
x4 vdd vss 4 5 inv
x5 vdd vss 5 1 inv
* Beta Version
* PTM 22nm NMOS
.model nmos nmos level = 54
+version = 4.0 binunit = 1 paramchk= 1 mobmod = 0
+capmod = 2 igcmod = 1 igbmod = 1 geomod = 1
+diomod = 1 rdsmod = 0 rbodymod= 1 rgatemod= 1
+permod = 1 acnqsmod= 0 trnqsmod= 0
+tnom = 27 toxe = 1.2e-9 toxp = 0.9e-9 toxm = 1.2e-9
+dtox = 0.3e-9 epsrox = 3.9 wint = 5e-009 lint = 2.0e-009
+ll = 0 wl = 0 lln = 1 wln = 1
+lw = 0 ww = 0 lwn = 1 wwn = 1
+lwl = 0 wwl = 0 xpart = 0 toxref = 1.2e-9
+xl = -9e-9
+vth0 = 0.5118 k1 = 0.4 k2 = 0.0 k3 = 0
+k3b = 0 w0 = 2.5e-006 dvt0 = 1 dvt1 = 2
+dvt2 = 0 dvt0w = 0 dvt1w = 0 dvt2w = 0
+dsub = 0.078 minv = 0.05 voffl = 0 dvtp0 = 1.0e-011
+dvtp1 = 0.1 lpe0 = 0 lpeb = 0 xj = 7.2e-009
+ngate = 2e+020 ndep = 12e+018 nsd = 2e+020 phin = 0
+cdsc = 0.000 cdscb = 0 cdscd = 0 cit = 0
+voff = -0.13 nfactor = 2.3 eta0 = 0.0045 etab = 0
+vfb = -1.058 u0 = 0.0181 ua = -5e-010 ub = 1.7e-018
+uc = 0 vsat = 200000 a0 = 1.0 ags = 0
+a1 = 0 a2 = 1.0 b0 = 0 b1 = 0
+keta = 0.04 dwg = 0 dwb = 0 pclm = 0.06
+pdiblc1 = 0.001 pdiblc2 = 0.001 pdiblcb = -0.005 drout = 0.5
+pvag = 1e-020 delta = 0.01 pscbe1 = 8.14e+008 pscbe2 = 1e-007
+fprout = 0.2 pdits = 0.01 pditsd = 0.23 pditsl = 2.3e+006
+rsh = 5 rdsw = 130 rsw = 75 rdw = 75
+rdswmin = 0 rdwmin = 0 rswmin = 0 prwg = 0
+prwb = 0 wr = 1 alpha0 = 0.074 alpha1 = 0.005
+beta0 = 30 agidl = 0.0002 bgidl = 2.1e+009 cgidl = 0.0002
+egidl = 0.8
+aigbacc = 0.012 bigbacc = 0.0028 cigbacc = 0.002
+nigbacc = 1 aigbinv = 0.014 bigbinv = 0.004 cigbinv = 0.004
+eigbinv = 1.1 nigbinv = 3 aigc = 0.012 bigc = 0.0028
+cigc = 0.002 aigsd = 0.012 bigsd = 0.0028 cigsd = 0.002
+nigc = 1 poxedge = 1 pigcd = 1 ntox = 1
+xrcrg1 = 12 xrcrg2 = 5
+cgso = 0.65e-010 cgdo = 0.65e-010 cgbo = 2.56e-011 cgdl = 2.653e-10
+cgsl = 2.653e-10 ckappas = 0.03 ckappad = 0.03 acde = 1
+moin = 15 noff = 0.9 voffcv = 0.02
+kt1 = -0.11 kt1l = 0 kt2 = 0.022 ute = -1.5
+ua1 = 4.31e-009 ub1 = 7.61e-018 uc1 = -5.6e-011 prt = 0
+at = 33000
+fnoimod = 1 tnoimod = 0
+jss = 0.0001 jsws = 1e-011 jswgs = 1e-010 njs = 1
+ijthsfwd= 0.01 ijthsrev= 0.001 bvs = 10 xjbvs = 1
+jsd = 0.0001 jswd = 1e-011 jswgd = 1e-010 njd = 1
+ijthdfwd= 0.01 ijthdrev= 0.001 bvd = 10 xjbvd = 1
+pbs = 1 cjs = 0.0005 mjs = 0.5 pbsws = 1
+cjsws = 5e-010 mjsws = 0.33 pbswgs = 1 cjswgs = 3e-010
+mjswgs = 0.33 pbd = 1 cjd = 0.0005 mjd = 0.5
+pbswd = 1 cjswd = 5e-010 mjswd = 0.33 pbswgd = 1
+cjswgd = 5e-010 mjswgd = 0.33 tpb = 0.005 tcj = 0.001
+tpbsw = 0.005 tcjsw = 0.001 tpbswg = 0.005 tcjswg = 0.001
+xtis = 3 xtid = 3
+dmcg = 0e-006 dmci = 0e-006 dmdg = 0e-006 dmcgt = 0e-007
+dwj = 0.0e-008 xgw = 0e-007 xgl = 0e-008
+rshg = 0.4 gbmin = 1e-010 rbpb = 5 rbpd = 15
+rbps = 15 rbdb = 15 rbsb = 15 ngcon = 1
* PTM 22nm PMOS
.model pmos pmos level = 54
+version = 4.0 binunit = 1 paramchk= 1 mobmod = 0
+capmod = 2 igcmod = 1 igbmod = 1 geomod = 1
+diomod = 1 rdsmod = 0 rbodymod= 1 rgatemod= 1
+permod = 1 acnqsmod= 0 trnqsmod= 0
+tnom = 27 toxe = 1.2e-009 toxp = 0.9e-009 toxm = 1.2e-009
+dtox = 0.3e-9 epsrox = 3.9 wint = 5e-009 lint = 2.0e-009
+ll = 0 wl = 0 lln = 1 wln = 1
+lw = 0 ww = 0 lwn = 1 wwn = 1
+lwl = 0 wwl = 0 xpart = 0 toxref = 1.2e-009
+xl = -9e-9
+vth0 = -0.372 k1 = 0.4 k2 = -0.01 k3 = 0
+k3b = 0 w0 = 2.5e-006 dvt0 = 1 dvt1 = 2
+dvt2 = -0.032 dvt0w = 0 dvt1w = 0 dvt2w = 0
+dsub = 0.1 minv = 0.05 voffl = 0 dvtp0 = 1e-011
+dvtp1 = 0.05 lpe0 = 0 lpeb = 0 xj = 7.2e-009
+ngate = 2e+020 ndep = 4.40e+018 nsd = 2e+020 phin = 0
+cdsc = 0.000 cdscb = 0 cdscd = 0 cit = 0
+voff = -0.13 nfactor = 2.3 eta0 = 0.0037 etab = 0
+vfb = -1.058 u0 = 0.00230 ua = -0.5e-009 ub = 1.6e-018
+uc = 0 vsat = 78000 a0 = 1.0 ags = 1e-020
+a1 = 0 a2 = 1 b0 = 0 b1 = 0
+keta = -0.047 dwg = 0 dwb = 0 pclm = 0.1
+pdiblc1 = 0.001 pdiblc2 = 0.001 pdiblcb = 3.4e-008 drout = 0.6
+pvag = 1e-020 delta = 0.01 pscbe1 = 8.14e+008 pscbe2 = 9.58e-007
+fprout = 0.2 pdits = 0.08 pditsd = 0.23 pditsl = 2.3e+006
+rsh = 5 rdsw = 130 rsw = 65 rdw = 65
+rdswmin = 0 rdwmin = 0 rswmin = 0 prwg = 0
+prwb = 0 wr = 1 alpha0 = 0.074 alpha1 = 0.005
+beta0 = 30 agidl = 0.0002 bgidl = 2.1e+009 cgidl = 0.0002
+egidl = 0.8
+aigbacc = 0.012 bigbacc = 0.0028 cigbacc = 0.002
+nigbacc = 1 aigbinv = 0.014 bigbinv = 0.004 cigbinv = 0.004
+eigbinv = 1.1 nigbinv = 3 aigc = 0.69 bigc = 0.0012
+cigc = 0.0008 aigsd = 0.0087 bigsd = 0.0012 cigsd = 0.0008
+nigc = 1 poxedge = 1 pigcd = 1 ntox = 1
+xrcrg1 = 12 xrcrg2 = 5
+cgso = 0.65e-010 cgdo = 0.65e-010 cgbo = 2.56e-011 cgdl = 2.653e-10
+cgsl = 2.653e-10 ckappas = 0.03 ckappad = 0.03 acde = 1
+moin = 15 noff = 0.9 voffcv = 0.02
+kt1 = -0.11 kt1l = 0 kt2 = 0.022 ute = -1.5
+ua1 = 4.31e-009 ub1 = 7.61e-018 uc1 = -5.6e-011 prt = 0
+at = 33000
+fnoimod = 1 tnoimod = 0
+jss = 0.0001 jsws = 1e-011 jswgs = 1e-010 njs = 1
+ijthsfwd= 0.01 ijthsrev= 0.001 bvs = 10 xjbvs = 1
+jsd = 0.0001 jswd = 1e-011 jswgd = 1e-010 njd = 1
+ijthdfwd= 0.01 ijthdrev= 0.001 bvd = 10 xjbvd = 1
+pbs = 1 cjs = 0.0005 mjs = 0.5 pbsws = 1
+cjsws = 5e-010 mjsws = 0.33 pbswgs = 1 cjswgs = 3e-010
+mjswgs = 0.33 pbd = 1 cjd = 0.0005 mjd = 0.5
+pbswd = 1 cjswd = 5e-010 mjswd = 0.33 pbswgd = 1
+cjswgd = 5e-010 mjswgd = 0.33 tpb = 0.005 tcj = 0.001
+tpbsw = 0.005 tcjsw = 0.001 tpbswg = 0.005 tcjswg = 0.001
+xtis = 3 xtid = 3
+dmcg = 0e-006 dmci = 0e-006 dmdg = 0e-006 dmcgt = 0e-007
+dwj = 0.0e-008 xgw = 0e-007 xgl = 0e-008
+rshg = 0.4 gbmin = 1e-010 rbpb = 5 rbpd = 15
+rbps = 15 rbdb = 15 rbsb = 15 ngcon = 1
.Variation
.Global_Variation
Parameter var=N() Y='0.8 + 0.6 * var' Z='0.5 + 0.6 * var'
Nmos nch
+ tox =Perturb('Z')
+ leff=Perturb('Y')
+ vth0=Perturb('-6.2E-12*Y')
Pmos pch
+ tox =Perturb('0.9*Z')
+ leff=Perturb('0.81*Y')
+ vth0=Perturb('-6.2E-12*Y')
.End_Global_Variation
.Local_Variation
Parameter var=N() Y='0.7 + 0.6 * var' Z='0.5 + 0.6 * var'
Nmos nch
+ tox =Perturb('Z')
+ leff=Perturb('Y')
+ vth0=Perturb('-6.2E-12*Y')
Pmos pch
+ tox =Perturb('0.9*Z')
+ leff=Perturb('0.81*Y')
+ vth0=Perturb('-6.2E-12*Y')
.End_Local_Variation
.End_Variation
.TRAN step=0.5 start=1 stop=20 monte=10
.print v(1) v(2) v(3) v(4)
.end
