求助，怎样通过仿真得到阈值电压和uncox的值

a8997368 · 发表于 2012-12-6 11:08:15

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各位前辈，我是研一学生，最近在使用0.25um工艺进行仿真设计放大器，然后进行仿真求uncox和阈值电压，但是总能得到不同的结果，另外，spice仿真模型中的沟道长度调制系数怎么查？下面是工艺库文件的NMOS模型，跟拉扎维等书上的模型不全相同，尤其没找到沟道长度调制系数在哪，希望各位前辈指点。
.MODEL nch.1          NMOS (                   LMIN    = '1.2E-06-dxl'
+CALCACM = 1             SFVTFLAG = 0             VFBFLAG  = 1
+LMAX = 2.1E-05       WMIN    = '1.2E-06-dxw'  WMAX    = 1.01E-04
+LEVEL = 49          TNOM    = 25          XL    = '3E-08+dxl'
+NLEV = 3             AF    = 0.8824       KF    = 3.454E-24
+XW    = '0+dxw'       VERSION  = 3.2          TOX    = toxn
+XJ    = 1E-07       NCH    = 1.63E+17    LLN    = 1
+LWN    = 1             WLN    = 1             WWN    = 1
+LINT = 2E-08       WINT    = 2E-08       MOBMOD = 1
+BINUNIT = 2             DWG    = 0             DWB    = 0
+VTH0 = '0.4767749+dvthn' LVTH0 = 3.507137E-08 WVTH0 = -1.453229E-08
+PVTH0 = -6.620086E-15  K1    = 0.4472964    LK1    = -5.39693E-08
+WK1    = -4.269873E-08  PK1    = 5.981896E-14 K2    = 0.004538423
+LK2    = 2.041006E-08 WK2    = 1.682965E-08 PK2    = -2.784819E-14
+K3    = 0             DVT0    = 0             DVT1    = 0
+DVT2 = 0             DVT0W = 0             DVT1W = 0
+DVT2W = 0             NLX    = 0             W0    = 0
+K3B    = 0             VSAT    = 120633       LVSAT = -0.01265326
+UA    = -9.218065E-10  LUA    = -1.161761E-16  WUA    = 1.451009E-16
+PUA    = -5.566174E-23  UB    = 1.81497E-18 LUB    = 1.561614E-25
+WUB    = -2.338524E-25  PUB    = 8.58042E-33 UC    = 4.365745E-11
+LUC    = 8.007525E-18 WUC    = -7.436576E-18  PUC    = -6.149303E-24
+RDSW = 187          PRWB    = 0             PRWG    = 0
+WR    = 1             U0    = 0.03077917    LU0    = 5.598957E-11
+WU0    = -8.158919E-11  PU0    = 1.090017E-15 A0    = 0.5252816
+LA0    = 4.042826E-08 WA0    = 1.225374E-07 PA0    = -2.063631E-13
+KETA = 0.003461425 LKETA = -9.223886E-09  WKETA = -8.366612E-11
+PKETA = 1.672486E-15 A1    = 0             A2    = 0.65
+AGS    = 0.01          B0    = 0             B1    = 0
+VOFF = -0.1517445    LVOFF = 2.086556E-08 WVOFF = 6.482217E-09
+PVOFF = -7.791971E-15  NFACTOR  = 1             CIT    = 0.000377699
+LCIT = 7.405382E-10 WCIT    = -6.34899E-10 PCIT    = 7.555298E-16
+CDSC = 0             CDSCB = 0             CDSCD = 0
+ETA0 = 3.836953E-05 LETA0 = 2.324929E-10 WETA0 = 8.055062E-12
+PETA0 = -1.610206E-16  ETAB    = -4.68351E-05 LETAB = -6.326623E-11
+DSUB = 0             PCLM    = 0.4755805    LPCLM = 4.88145E-07
+WPCLM = -6.231367E-09  PPCLM = 1.245653E-13 PDIBLC1  = 1E-05
+PDIBLC2 = 0.0002151594 LPDIBLC2 = 5.69396E-09 PDIBLCB  = 0.01
+DROUT = 0             PSCBE1 = 1.213673E+08 LPSCBE1  = 265.5531
+WPSCBE1 = -3.167115    PPSCBE1  = -1.324478E-05  PSCBE2 = 1E-06
+PVAG = 0             DELTA = 0.01          ALPHA0 = 4.200379E-06
+BETA0 = 20.54463    KT1    = -0.2402984    LKT1    = -1.511487E-08
+WKT1 = 1.116811E-08 PKT1    = -1.329005E-14  KT2    = -0.02232689
+LKT2 = -1.527194E-08  WKT2    = -1.12105E-08 PKT2    = 1.287179E-14
+AT    = 35000       UTE    = -1.688541    LUTE    = 3.778586E-09
+WUTE = 1.029916E-07 PUTE    = -5.895606E-14  UA1    = 9.999999E-11
+UB1    = 0             UC1    = -4.534566E-11  LUC1    = 7.638851E-17
+WUC1 = 8.059368E-17 PUC1    = -8.934457E-23  KT1L    = 0
+PRT    = 0             CJ    = cjn          MJ    = 0.4708251
+PB    = 0.9597901    CJSW    = cjswn       MJSW    = 0.379613
+PBSW = 0.9597901    CJSWG = cjgaten       MJSWG = 0.379613
+PBSWG = 0.9597901    CTA    = 0.0007391288 CTP    = 0.0009081566
+PTA    = 0.001293296 PTP    = 0.001178533 JS    = 2E-06
+JSW    = 5E-10       CGDO    = cgon          CGSO    = cgon
+CAPMOD  = 3             NQSMOD = 0             XPART = 1
+CF    = 0             TLEV    = 1             TLEVC = 1
+XTI    = 3             N       = 1             HDIF    = hdifn
+LDIF = 1.2E-07       RSH    = 4.5          RS    = 0
+RD    = 0             ACM    = 12          DLC    = 3.49e-9
+DWC    = 5.76e-10    CLC    = 3.82E-08    CLE    = 0.6972
+ACDE = 0.4          MOIN    = 10          NOFF    = 1.4959
+VOFFCV  = -0.074       CKAPPA = 2.8769       CGDL = cgln
+CGSL = cgln          CGBO    = 1E-13          TOXM = 5.4E-9)

359705716 · 发表于 2012-12-6 14:56:39

你仿真一个DC就可以看到vth的

a8997368 · 发表于 2012-12-6 20:25:26

谢谢前辈，不过我仿真后发现，加负载和不加负载得出的阈值电压不同，是不是应该在不加负载的前提下得到的阈值电压才是正确的？

a8997368 · 发表于 2012-12-6 20:27:10

谢谢前辈，我进行DC仿真后发现，有负载和没有负载的情况下得到的阈值电压不同，是不是没有负载的情况下得到的才是正确的阈值电压？

xiarilianqu001 · 发表于 2013-1-10 09:06:01

mosfet 2.5V.docx (345.44 KB, 下载次数: 1944 )
mos管常用工艺参数仿真方法

adampippo · 发表于 2013-8-20 19:42:34

回复 5# xiarilianqu001

好人，好人

liao2010 · 发表于 2013-8-29 22:48:19

能提供一下mos管常用工艺参数在HSPICE仿真时的几个函数吗？

tanyulin6 · 发表于 2014-6-26 15:28:29

回复 5# xiarilianqu001

多谢啦

starwatchor · 发表于 2014-6-27 09:33:33

看一下

fujitf · 发表于 2014-7-17 10:32:42

不错不错

[求助] 求助，怎样通过仿真得到阈值电压和uncox的值

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