Hysteresis sweep option in DC

Well, thanks a lot. This is the first time I run something like this. It looks professional!

I have just followed your instructions and it works nicely.

So hope you have some idea why my hysteresis in DC analysis doesn't work now.

For MMSIM I am using MMSIM13.11.

No, I have no idea why your hysteresis isn't working. You still haven't specified the exact version number (this will appear in the spectre log file). However, since my example works, it's unlikely to be a generic bug in the simulator.

The only next step is to see either the complete spectre log file (you didn't post that - especially the bit showing the dc analysis), and better still the actual input.scs. If you can't post that here, you'll need to follow this up through your University support channel (as we've discussed before).

Regards,

Andrew.

Well, I thought that is the complete version number.  I didn't post complete log file because I thought that part was irrelevant. Sorry about that.

Here are the complete log file and input file:

******************************

SPECTRE LOG FILE

******************************

Cadence (R) Virtuoso (R) Spectre (R) Circuit Simulator
Version 13.1.1.049 64bit -- 15 Apr 2014
Copyright (C) 1989-2014 Cadence Design Systems, Inc. All rights reserved worldwide. Cadence, Virtuoso and Spectre are registered trademarks of Cadence Design Systems, Inc. All others are the property of their respective holders.

Includes RSA BSAFE(R) Cryptographic or Security Protocol Software from RSA Security, Inc.

User: root   Host: iclab   HostID: 7F0100   PID: 7236
Memory  available: 348.9955 MB  physical: 8.1514 GB
CPU Type: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
          Processor PhysicalID CoreID Frequency Load
              0         0        0     2900.0    16.3
              1         0        1     3201.0    15.9
              2         0        2     3201.0    15.5
              3         0        3     3201.0    15.0


Simulating `input.scs' on iclab at 7:23:54 PM, Wed Apr 6, 2016 (process id: 7236).
Current working directory: /root/simulation/Hys_Comp/spectre/schematic/netlist
Environment variable:
    SPECTRE_DEFAULTS=-E
Command line:
    /usr/cadence/MMSIM131/tools/bin/spectre -64 input.scs +escchars  \
        +log ../psf/spectre.out +inter=mpsc  \
        +mpssession=spectre13_27853_154 -format psfxl -raw ../psf  \
        +lqtimeout 900 -maxw 5 -maxn 5
spectre pid = 7236

Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libinfineon_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libphilips_o_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libphilips_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libsparam_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libstmodels_sh.so ...
Reading file:  /root/simulation/Hys_Comp/spectre/schematic/netlist/input.scs
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/configs/spectre.cfg
Reading file:  /root/Design6/Simulation_Efficiency/TSMC18/models/spectre/rf018.scs

Warning from spectre in `ndio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18628: The inline subckt definition `ndio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `pdio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18645: The inline subckt definition `pdio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `nwdio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18662: The inline subckt definition `nwdio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `endio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18679: The inline subckt definition `endio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `dnwpsub', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18697: The inline subckt definition `dnwpsub' does not contain any inline components. The `inline' qualifier will therefore be ignored.
        Further occurrences of this warning will be suppressed.

Time for NDB Parsing: CPU = 351.947 ms, elapsed = 440.255 ms.
Time accumulated: CPU = 370.943 ms, elapsed = 440.261 ms.
Peak resident memory used = 54.4 Mbytes.

Reading link:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/discipline.h
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/disciplines.vams
Reading link:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/constants.h
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/constants.vams
Time for Elaboration: CPU = 27.995 ms, elapsed = 27.7741 ms.
Time accumulated: CPU = 398.938 ms, elapsed = 468.221 ms.
Peak resident memory used = 60.2 Mbytes.

Time for EDB Visiting: CPU = 1 ms, elapsed = 713.825 us.
Time accumulated: CPU = 399.938 ms, elapsed = 469.242 ms.
Peak resident memory used = 60.6 Mbytes.


Global user options:
             reltol = 0.001
            vabstol = 1e-06
            iabstol = 1e-12
               temp = 27
               tnom = 27
             scalem = 1
              scale = 1
               gmin = 1e-12
             rforce = 1
           maxnotes = 5
           maxwarns = 5
             digits = 5
               cols = 80
             pivrel = 0.001
           sensfile = ../psf/sens.output
     checklimitdest = psf
         rampsource = no
               save = allpub

Circuit inventory:
              nodes 9
            bsim3v3 11    
            vsource 4     

Analysis and control statement inventory:
                 dc 2     
               info 7     

Output statements:
             .probe 0     
           .measure 0     
               save 0     


Notice from spectre.
    4 warnings suppressed.

Time for parsing: CPU = 2 ms, elapsed = 74.6269 ms.
Time accumulated: CPU = 401.938 ms, elapsed = 544.006 ms.
Peak resident memory used = 61.4 Mbytes.

~~~~~~~~~~~~~~~~~~~~~~
Pre-Simulation Summary
~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~
Entering remote command mode using MPSC service (spectre, ipi, v0.0, spectre13_27853_154, ).

Warning from spectre.
    WARNING (SPECTRE-16707): Only tran supports psfxl format, result of other analyses will be in psfbin format.


******************
DC Analysis `dcOp'
******************
Important parameter values:
    reltol = 1e-03
    abstol(V) = 1 uV
    abstol(I) = 1 pA
    temp = 27 C
    tnom = 27 C
    tempeffects = all
    gmindc = 1 pS
Convergence achieved in 10 iterations.
Total time required for dc analysis `dcOp': CPU = 2 ms, elapsed = 2.2881 ms.
Time accumulated: CPU = 405.938 ms, elapsed = 736.436 ms.
Peak resident memory used = 62.3 Mbytes.

dcOpInfo: writing operating point information to rawfile.

**********************************
DC Analysis `dc': vdc = (0 -> 1.2)
**********************************
Important parameter values:
    reltol = 1e-03
    abstol(V) = 1 uV
    abstol(I) = 1 pA
    temp = 27 C
    tnom = 27 C
    tempeffects = all
    gmindc = 1 pS
    hysteresis = on
    dc: vdc = 60e-03       (2.5 %), step = 6e-03        (250 m%)
    dc: vdc = 66e-03      (2.75 %), step = 6e-03        (250 m%)
    dc: vdc = 72e-03         (3 %), step = 6e-03        (250 m%)
    dc: vdc = 78e-03      (3.25 %), step = 6e-03        (250 m%)
    dc: vdc = 84e-03       (3.5 %), step = 6e-03        (250 m%)
    dc: vdc = 90e-03      (3.75 %), step = 6e-03        (250 m%)
    dc: vdc = 96e-03         (4 %), step = 6e-03        (250 m%)
    dc: vdc = 102e-03     (4.25 %), step = 6e-03        (250 m%)
    dc: vdc = 108e-03      (4.5 %), step = 6e-03        (250 m%)
    dc: vdc = 114e-03     (4.75 %), step = 6e-03        (250 m%)
    dc: vdc = 120e-03        (5 %), step = 6e-03        (250 m%)
    dc: vdc = 126e-03     (5.25 %), step = 6e-03        (250 m%)
    dc: vdc = 132e-03      (5.5 %), step = 6e-03        (250 m%)
    dc: vdc = 138e-03     (5.75 %), step = 6e-03        (250 m%)
    dc: vdc = 144e-03        (6 %), step = 6e-03        (250 m%)
    dc: vdc = 150e-03     (6.25 %), step = 6e-03        (250 m%)
    dc: vdc = 156e-03      (6.5 %), step = 6e-03        (250 m%)
    dc: vdc = 162e-03     (6.75 %), step = 6e-03        (250 m%)
    dc: vdc = 168e-03        (7 %), step = 6e-03        (250 m%)
    dc: vdc = 174e-03     (7.25 %), step = 6e-03        (250 m%)
    dc: vdc = 180e-03      (7.5 %), step = 6e-03        (250 m%)
    dc: vdc = 186e-03     (7.75 %), step = 6e-03        (250 m%)
    dc: vdc = 192e-03        (8 %), step = 6e-03        (250 m%)
    dc: vdc = 198e-03     (8.25 %), step = 6e-03        (250 m%)
    dc: vdc = 204e-03      (8.5 %), step = 6e-03        (250 m%)
    dc: vdc = 210e-03     (8.75 %), step = 6e-03        (250 m%)
    dc: vdc = 216e-03        (9 %), step = 6e-03        (250 m%)
    dc: vdc = 222e-03     (9.25 %), step = 6e-03        (250 m%)
    dc: vdc = 228e-03      (9.5 %), step = 6e-03        (250 m%)
    dc: vdc = 234e-03     (9.75 %), step = 6e-03        (250 m%)
    dc: vdc = 240e-03       (10 %), step = 6e-03        (250 m%)
    dc: vdc = 246e-03     (10.2 %), step = 6e-03        (250 m%)
    dc: vdc = 252e-03     (10.5 %), step = 6e-03        (250 m%)
    dc: vdc = 258e-03     (10.8 %), step = 6e-03        (250 m%)
    dc: vdc = 264e-03       (11 %), step = 6e-03        (250 m%)
    dc: vdc = 270e-03     (11.2 %), step = 6e-03        (250 m%)
    dc: vdc = 276e-03     (11.5 %), step = 6e-03        (250 m%)
    dc: vdc = 282e-03     (11.8 %), step = 6e-03        (250 m%)
    dc: vdc = 288e-03       (12 %), step = 6e-03        (250 m%)
    dc: vdc = 294e-03     (12.2 %), step = 6e-03        (250 m%)
    dc: vdc = 300e-03     (12.5 %), step = 6e-03        (250 m%)
    dc: vdc = 306e-03     (12.8 %), step = 6e-03        (250 m%)
    dc: vdc = 312e-03       (13 %), step = 6e-03        (250 m%)
    dc: vdc = 318e-03     (13.2 %), step = 6e-03        (250 m%)
    dc: vdc = 324e-03     (13.5 %), step = 6e-03        (250 m%)
    dc: vdc = 330e-03     (13.8 %), step = 6e-03        (250 m%)
    dc: vdc = 336e-03       (14 %), step = 6e-03        (250 m%)
    dc: vdc = 342e-03     (14.2 %), step = 6e-03        (250 m%)
    dc: vdc = 348e-03     (14.5 %), step = 6e-03        (250 m%)
    dc: vdc = 354e-03     (14.8 %), step = 6e-03        (250 m%)
    dc: vdc = 360e-03       (15 %), step = 6e-03        (250 m%)
    dc: vdc = 366e-03     (15.2 %), step = 6e-03        (250 m%)
    dc: vdc = 372e-03     (15.5 %), step = 6e-03        (250 m%)
    dc: vdc = 378e-03     (15.8 %), step = 6e-03        (250 m%)
    dc: vdc = 384e-03       (16 %), step = 6e-03        (250 m%)
    dc: vdc = 390e-03     (16.2 %), step = 6e-03        (250 m%)
    dc: vdc = 396e-03     (16.5 %), step = 6e-03        (250 m%)
    dc: vdc = 402e-03     (16.8 %), step = 6e-03        (250 m%)
    dc: vdc = 408e-03       (17 %), step = 6e-03        (250 m%)
    dc: vdc = 414e-03     (17.2 %), step = 6e-03        (250 m%)
    dc: vdc = 420e-03     (17.5 %), step = 6e-03        (250 m%)
    dc: vdc = 426e-03     (17.8 %), step = 6e-03        (250 m%)
    dc: vdc = 432e-03       (18 %), step = 6e-03        (250 m%)
    dc: vdc = 438e-03     (18.2 %), step = 6e-03        (250 m%)
    dc: vdc = 444e-03     (18.5 %), step = 6e-03        (250 m%)
    dc: vdc = 450e-03     (18.8 %), step = 6e-03        (250 m%)
    dc: vdc = 456e-03       (19 %), step = 6e-03        (250 m%)
    dc: vdc = 462e-03     (19.2 %), step = 6e-03        (250 m%)
    dc: vdc = 468e-03     (19.5 %), step = 6e-03        (250 m%)
    dc: vdc = 474e-03     (19.8 %), step = 6e-03        (250 m%)
    dc: vdc = 480e-03       (20 %), step = 6e-03        (250 m%)
    dc: vdc = 486e-03     (20.2 %), step = 6e-03        (250 m%)
    dc: vdc = 492e-03     (20.5 %), step = 6e-03        (250 m%)
    dc: vdc = 498e-03     (20.8 %), step = 6e-03        (250 m%)
    dc: vdc = 504e-03       (21 %), step = 6e-03        (250 m%)
    dc: vdc = 510e-03     (21.2 %), step = 6e-03        (250 m%)
    dc: vdc = 516e-03     (21.5 %), step = 6e-03        (250 m%)
    dc: vdc = 522e-03     (21.8 %), step = 6e-03        (250 m%)
    dc: vdc = 528e-03       (22 %), step = 6e-03        (250 m%)
    dc: vdc = 534e-03     (22.2 %), step = 6e-03        (250 m%)
    dc: vdc = 540e-03     (22.5 %), step = 6e-03        (250 m%)
    dc: vdc = 546e-03     (22.8 %), step = 6e-03        (250 m%)
    dc: vdc = 552e-03       (23 %), step = 6e-03        (250 m%)
    dc: vdc = 558e-03     (23.2 %), step = 6e-03        (250 m%)
    dc: vdc = 564e-03     (23.5 %), step = 6e-03        (250 m%)
    dc: vdc = 570e-03     (23.8 %), step = 6e-03        (250 m%)
    dc: vdc = 576e-03       (24 %), step = 6e-03        (250 m%)
    dc: vdc = 582e-03     (24.2 %), step = 6e-03        (250 m%)
    dc: vdc = 588e-03     (24.5 %), step = 6e-03        (250 m%)
    dc: vdc = 594e-03     (24.8 %), step = 6e-03        (250 m%)
    dc: vdc = 600e-03       (25 %), step = 6e-03        (250 m%)
    dc: vdc = 606e-03     (25.2 %), step = 6e-03        (250 m%)

Notice from spectre at vdc = 612e-03 during DC analysis `dc'.
    GminDC = 1 pS is large enough to noticeably affect the DC solution.
        dV(M7:int_d) = 345.561 uV
        Use the `gmin_check' option to eliminate or expand this report.

    dc: vdc = 612e-03     (25.5 %), step = 6e-03        (250 m%)

Notice from spectre at vdc = 618e-03 during DC analysis `dc'.
    GminDC = 1 pS is large enough to noticeably affect the DC solution.
        dV(M7:int_d) = 785.189 uV
        Use the `gmin_check' option to eliminate or expand this report.

    dc: vdc = 618e-03     (25.8 %), step = 6e-03        (250 m%)

Notice from spectre at vdc = 624e-03 during DC analysis `dc'.
    GminDC = 1 pS is large enough to noticeably affect the DC solution.
        dV(M7:int_d) = 1.37128 mV
        Use the `gmin_check' option to eliminate or expand this report.

    dc: vdc = 624e-03       (26 %), step = 6e-03        (250 m%)

Notice from spectre at vdc = 630e-03 during DC analysis `dc'.
    GminDC = 1 pS is large enough to noticeably affect the DC solution.
        dV(M7:int_d) = 2.07755 mV
        Use the `gmin_check' option to eliminate or expand this report.

    dc: vdc = 630e-03     (26.2 %), step = 6e-03        (250 m%)

Notice from spectre at vdc = 636e-03 during DC analysis `dc'.
    GminDC = 1 pS is large enough to noticeably affect the DC solution.
        Further occurrences of this notice will be suppressed.
        dV(M7:int_d) = 2.86768 mV
        Further occurrences of this notice will be suppressed.
        Use the `gmin_check' option to eliminate or expand this report.
        Further occurrences of this notice will be suppressed.

    dc: vdc = 636e-03     (26.5 %), step = 6e-03        (250 m%)
    dc: vdc = 642e-03     (26.8 %), step = 6e-03        (250 m%)
    dc: vdc = 648e-03       (27 %), step = 6e-03        (250 m%)
    dc: vdc = 654e-03     (27.3 %), step = 6e-03        (250 m%)
    dc: vdc = 660e-03     (27.5 %), step = 6e-03        (250 m%)
    dc: vdc = 666e-03     (27.8 %), step = 6e-03        (250 m%)
    dc: vdc = 672e-03       (28 %), step = 6e-03        (250 m%)
    dc: vdc = 678e-03     (28.2 %), step = 6e-03        (250 m%)
    dc: vdc = 684e-03     (28.5 %), step = 6e-03        (250 m%)
    dc: vdc = 690e-03     (28.7 %), step = 6e-03        (250 m%)
    dc: vdc = 696e-03       (29 %), step = 6e-03        (250 m%)
    dc: vdc = 702e-03     (29.2 %), step = 6e-03        (250 m%)
    dc: vdc = 708e-03     (29.5 %), step = 6e-03        (250 m%)
    dc: vdc = 714e-03     (29.8 %), step = 6e-03        (250 m%)
    dc: vdc = 720e-03       (30 %), step = 6e-03        (250 m%)
    dc: vdc = 726e-03     (30.2 %), step = 6e-03        (250 m%)
    dc: vdc = 732e-03     (30.5 %), step = 6e-03        (250 m%)
    dc: vdc = 738e-03     (30.8 %), step = 6e-03        (250 m%)
    dc: vdc = 744e-03       (31 %), step = 6e-03        (250 m%)
    dc: vdc = 750e-03     (31.2 %), step = 6e-03        (250 m%)
    dc: vdc = 756e-03     (31.5 %), step = 6e-03        (250 m%)
    dc: vdc = 762e-03     (31.8 %), step = 6e-03        (250 m%)
    dc: vdc = 768e-03       (32 %), step = 6e-03        (250 m%)
    dc: vdc = 774e-03     (32.2 %), step = 6e-03        (250 m%)
    dc: vdc = 780e-03     (32.5 %), step = 6e-03        (250 m%)
    dc: vdc = 786e-03     (32.8 %), step = 6e-03        (250 m%)
    dc: vdc = 792e-03       (33 %), step = 6e-03        (250 m%)
    dc: vdc = 798e-03     (33.2 %), step = 6e-03        (250 m%)
    dc: vdc = 804e-03     (33.5 %), step = 6e-03        (250 m%)
    dc: vdc = 810e-03     (33.8 %), step = 6e-03        (250 m%)
    dc: vdc = 816e-03       (34 %), step = 6e-03        (250 m%)
    dc: vdc = 822e-03     (34.2 %), step = 6e-03        (250 m%)
    dc: vdc = 828e-03     (34.5 %), step = 6e-03        (250 m%)
    dc: vdc = 834e-03     (34.8 %), step = 6e-03        (250 m%)
    dc: vdc = 840e-03       (35 %), step = 6e-03        (250 m%)
    dc: vdc = 846e-03     (35.2 %), step = 6e-03        (250 m%)
    dc: vdc = 852e-03     (35.5 %), step = 6e-03        (250 m%)
    dc: vdc = 858e-03     (35.8 %), step = 6e-03        (250 m%)
    dc: vdc = 864e-03       (36 %), step = 6e-03        (250 m%)
    dc: vdc = 870e-03     (36.2 %), step = 6e-03        (250 m%)
    dc: vdc = 876e-03     (36.5 %), step = 6e-03        (250 m%)
    dc: vdc = 882e-03     (36.8 %), step = 6e-03        (250 m%)
    dc: vdc = 888e-03       (37 %), step = 6e-03        (250 m%)
    dc: vdc = 894e-03     (37.2 %), step = 6e-03        (250 m%)
    dc: vdc = 900e-03     (37.5 %), step = 6e-03        (250 m%)
    dc: vdc = 906e-03     (37.8 %), step = 6e-03        (250 m%)
    dc: vdc = 912e-03       (38 %), step = 6e-03        (250 m%)
    dc: vdc = 918e-03     (38.2 %), step = 6e-03        (250 m%)
    dc: vdc = 924e-03     (38.5 %), step = 6e-03        (250 m%)
    dc: vdc = 930e-03     (38.8 %), step = 6e-03        (250 m%)
    dc: vdc = 936e-03       (39 %), step = 6e-03        (250 m%)
    dc: vdc = 942e-03     (39.2 %), step = 6e-03        (250 m%)
    dc: vdc = 948e-03     (39.5 %), step = 6e-03        (250 m%)
    dc: vdc = 954e-03     (39.8 %), step = 6e-03        (250 m%)
    dc: vdc = 960e-03       (40 %), step = 6e-03        (250 m%)
    dc: vdc = 966e-03     (40.2 %), step = 6e-03        (250 m%)
    dc: vdc = 972e-03     (40.5 %), step = 6e-03        (250 m%)
    dc: vdc = 978e-03     (40.8 %), step = 6e-03        (250 m%)
    dc: vdc = 984e-03       (41 %), step = 6e-03        (250 m%)
    dc: vdc = 990e-03     (41.2 %), step = 6e-03        (250 m%)
    dc: vdc = 996e-03     (41.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.002       (41.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.008         (42 %), step = 6e-03        (250 m%)
    dc: vdc = 1.014       (42.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.02        (42.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.026       (42.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.032         (43 %), step = 6e-03        (250 m%)
    dc: vdc = 1.038       (43.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.044       (43.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.05        (43.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.056         (44 %), step = 6e-03        (250 m%)
    dc: vdc = 1.062       (44.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.068       (44.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.074       (44.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.08          (45 %), step = 6e-03        (250 m%)
    dc: vdc = 1.086       (45.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.092       (45.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.098       (45.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.104         (46 %), step = 6e-03        (250 m%)
    dc: vdc = 1.11        (46.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.116       (46.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.122       (46.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.128         (47 %), step = 6e-03        (250 m%)
    dc: vdc = 1.134       (47.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.14        (47.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.146       (47.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.152         (48 %), step = 6e-03        (250 m%)
    dc: vdc = 1.158       (48.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.164       (48.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.17        (48.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.176         (49 %), step = 6e-03        (250 m%)
    dc: vdc = 1.182       (49.2 %), step = 6e-03        (250 m%)
    dc: vdc = 1.188       (49.5 %), step = 6e-03        (250 m%)
    dc: vdc = 1.194       (49.8 %), step = 6e-03        (250 m%)
    dc: vdc = 1.2           (50 %), step = 6e-03        (250 m%)
    dc: vdc = 1.194       (50.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.188       (50.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.182       (50.7 %), step = -6e-03       (250 m%)
    dc: vdc = 1.176         (51 %), step = -6e-03       (250 m%)
    dc: vdc = 1.17        (51.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.164       (51.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.158       (51.7 %), step = -6e-03       (250 m%)
    dc: vdc = 1.152         (52 %), step = -6e-03       (250 m%)
    dc: vdc = 1.146       (52.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.14        (52.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.134       (52.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.128         (53 %), step = -6e-03       (250 m%)
    dc: vdc = 1.122       (53.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.116       (53.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.11        (53.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.104         (54 %), step = -6e-03       (250 m%)
    dc: vdc = 1.098       (54.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.092       (54.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.086       (54.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.08          (55 %), step = -6e-03       (250 m%)
    dc: vdc = 1.074       (55.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.068       (55.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.062       (55.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.056         (56 %), step = -6e-03       (250 m%)
    dc: vdc = 1.05        (56.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.044       (56.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.038       (56.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.032         (57 %), step = -6e-03       (250 m%)
    dc: vdc = 1.026       (57.2 %), step = -6e-03       (250 m%)
    dc: vdc = 1.02        (57.5 %), step = -6e-03       (250 m%)
    dc: vdc = 1.014       (57.8 %), step = -6e-03       (250 m%)
    dc: vdc = 1.008         (58 %), step = -6e-03       (250 m%)
    dc: vdc = 1.002       (58.2 %), step = -6e-03       (250 m%)
    dc: vdc = 996e-03     (58.5 %), step = -6e-03       (250 m%)
    dc: vdc = 990e-03     (58.8 %), step = -6e-03       (250 m%)
    dc: vdc = 984e-03       (59 %), step = -6e-03       (250 m%)
    dc: vdc = 978e-03     (59.2 %), step = -6e-03       (250 m%)
    dc: vdc = 972e-03     (59.5 %), step = -6e-03       (250 m%)
    dc: vdc = 966e-03     (59.8 %), step = -6e-03       (250 m%)
    dc: vdc = 960e-03       (60 %), step = -6e-03       (250 m%)
    dc: vdc = 954e-03     (60.2 %), step = -6e-03       (250 m%)
    dc: vdc = 948e-03     (60.5 %), step = -6e-03       (250 m%)
    dc: vdc = 942e-03     (60.8 %), step = -6e-03       (250 m%)
    dc: vdc = 936e-03       (61 %), step = -6e-03       (250 m%)
    dc: vdc = 930e-03     (61.3 %), step = -6e-03       (250 m%)
    dc: vdc = 924e-03     (61.5 %), step = -6e-03       (250 m%)
    dc: vdc = 918e-03     (61.8 %), step = -6e-03       (250 m%)
    dc: vdc = 912e-03       (62 %), step = -6e-03       (250 m%)
    dc: vdc = 906e-03     (62.3 %), step = -6e-03       (250 m%)
    dc: vdc = 900e-03     (62.5 %), step = -6e-03       (250 m%)
    dc: vdc = 894e-03     (62.7 %), step = -6e-03       (250 m%)
    dc: vdc = 888e-03       (63 %), step = -6e-03       (250 m%)
    dc: vdc = 882e-03     (63.2 %), step = -6e-03       (250 m%)
    dc: vdc = 876e-03     (63.5 %), step = -6e-03       (250 m%)
    dc: vdc = 870e-03     (63.7 %), step = -6e-03       (250 m%)
    dc: vdc = 864e-03       (64 %), step = -6e-03       (250 m%)
    dc: vdc = 858e-03     (64.2 %), step = -6e-03       (250 m%)
    dc: vdc = 852e-03     (64.5 %), step = -6e-03       (250 m%)
    dc: vdc = 846e-03     (64.8 %), step = -6e-03       (250 m%)
    dc: vdc = 840e-03       (65 %), step = -6e-03       (250 m%)
    dc: vdc = 834e-03     (65.2 %), step = -6e-03       (250 m%)
    dc: vdc = 828e-03     (65.5 %), step = -6e-03       (250 m%)
    dc: vdc = 822e-03     (65.8 %), step = -6e-03       (250 m%)
    dc: vdc = 816e-03       (66 %), step = -6e-03       (250 m%)
    dc: vdc = 810e-03     (66.2 %), step = -6e-03       (250 m%)
    dc: vdc = 804e-03     (66.5 %), step = -6e-03       (250 m%)
    dc: vdc = 798e-03     (66.8 %), step = -6e-03       (250 m%)
    dc: vdc = 792e-03       (67 %), step = -6e-03       (250 m%)
    dc: vdc = 786e-03     (67.2 %), step = -6e-03       (250 m%)
    dc: vdc = 780e-03     (67.5 %), step = -6e-03       (250 m%)
    dc: vdc = 774e-03     (67.8 %), step = -6e-03       (250 m%)
    dc: vdc = 768e-03       (68 %), step = -6e-03       (250 m%)
    dc: vdc = 762e-03     (68.2 %), step = -6e-03       (250 m%)
    dc: vdc = 756e-03     (68.5 %), step = -6e-03       (250 m%)
    dc: vdc = 750e-03     (68.8 %), step = -6e-03       (250 m%)
    dc: vdc = 744e-03       (69 %), step = -6e-03       (250 m%)
    dc: vdc = 738e-03     (69.2 %), step = -6e-03       (250 m%)
    dc: vdc = 732e-03     (69.5 %), step = -6e-03       (250 m%)
    dc: vdc = 726e-03     (69.8 %), step = -6e-03       (250 m%)
    dc: vdc = 720e-03       (70 %), step = -6e-03       (250 m%)
    dc: vdc = 714e-03     (70.2 %), step = -6e-03       (250 m%)
    dc: vdc = 708e-03     (70.5 %), step = -6e-03       (250 m%)
    dc: vdc = 702e-03     (70.8 %), step = -6e-03       (250 m%)
    dc: vdc = 696e-03       (71 %), step = -6e-03       (250 m%)
    dc: vdc = 690e-03     (71.2 %), step = -6e-03       (250 m%)
    dc: vdc = 684e-03     (71.5 %), step = -6e-03       (250 m%)
    dc: vdc = 678e-03     (71.8 %), step = -6e-03       (250 m%)
    dc: vdc = 672e-03       (72 %), step = -6e-03       (250 m%)
    dc: vdc = 666e-03     (72.2 %), step = -6e-03       (250 m%)
    dc: vdc = 660e-03     (72.5 %), step = -6e-03       (250 m%)
    dc: vdc = 654e-03     (72.8 %), step = -6e-03       (250 m%)
    dc: vdc = 648e-03       (73 %), step = -6e-03       (250 m%)
    dc: vdc = 642e-03     (73.2 %), step = -6e-03       (250 m%)
    dc: vdc = 636e-03     (73.5 %), step = -6e-03       (250 m%)
    dc: vdc = 630e-03     (73.8 %), step = -6e-03       (250 m%)
    dc: vdc = 624e-03       (74 %), step = -6e-03       (250 m%)
    dc: vdc = 618e-03     (74.2 %), step = -6e-03       (250 m%)
    dc: vdc = 612e-03     (74.5 %), step = -6e-03       (250 m%)
    dc: vdc = 606e-03     (74.8 %), step = -6e-03       (250 m%)
    dc: vdc = 600e-03       (75 %), step = -6e-03       (250 m%)
    dc: vdc = 594e-03     (75.2 %), step = -6e-03       (250 m%)
    dc: vdc = 588e-03     (75.5 %), step = -6e-03       (250 m%)
    dc: vdc = 582e-03     (75.8 %), step = -6e-03       (250 m%)
    dc: vdc = 576e-03       (76 %), step = -6e-03       (250 m%)
    dc: vdc = 570e-03     (76.2 %), step = -6e-03       (250 m%)
    dc: vdc = 564e-03     (76.5 %), step = -6e-03       (250 m%)
    dc: vdc = 558e-03     (76.8 %), step = -6e-03       (250 m%)
    dc: vdc = 552e-03       (77 %), step = -6e-03       (250 m%)
    dc: vdc = 546e-03     (77.2 %), step = -6e-03       (250 m%)
    dc: vdc = 540e-03     (77.5 %), step = -6e-03       (250 m%)
    dc: vdc = 534e-03     (77.8 %), step = -6e-03       (250 m%)
    dc: vdc = 528e-03       (78 %), step = -6e-03       (250 m%)
    dc: vdc = 522e-03     (78.2 %), step = -6e-03       (250 m%)
    dc: vdc = 516e-03     (78.5 %), step = -6e-03       (250 m%)
    dc: vdc = 510e-03     (78.8 %), step = -6e-03       (250 m%)
    dc: vdc = 504e-03       (79 %), step = -6e-03       (250 m%)
    dc: vdc = 498e-03     (79.2 %), step = -6e-03       (250 m%)
    dc: vdc = 492e-03     (79.5 %), step = -6e-03       (250 m%)
    dc: vdc = 486e-03     (79.8 %), step = -6e-03       (250 m%)
    dc: vdc = 480e-03       (80 %), step = -6e-03       (250 m%)
    dc: vdc = 474e-03     (80.2 %), step = -6e-03       (250 m%)
    dc: vdc = 468e-03     (80.5 %), step = -6e-03       (250 m%)
    dc: vdc = 462e-03     (80.8 %), step = -6e-03       (250 m%)
    dc: vdc = 456e-03       (81 %), step = -6e-03       (250 m%)
    dc: vdc = 450e-03     (81.2 %), step = -6e-03       (250 m%)
    dc: vdc = 444e-03     (81.5 %), step = -6e-03       (250 m%)
    dc: vdc = 438e-03     (81.8 %), step = -6e-03       (250 m%)
    dc: vdc = 432e-03       (82 %), step = -6e-03       (250 m%)
    dc: vdc = 426e-03     (82.2 %), step = -6e-03       (250 m%)
    dc: vdc = 420e-03     (82.5 %), step = -6e-03       (250 m%)
    dc: vdc = 414e-03     (82.8 %), step = -6e-03       (250 m%)
    dc: vdc = 408e-03       (83 %), step = -6e-03       (250 m%)
    dc: vdc = 402e-03     (83.2 %), step = -6e-03       (250 m%)
    dc: vdc = 396e-03     (83.5 %), step = -6e-03       (250 m%)
    dc: vdc = 390e-03     (83.8 %), step = -6e-03       (250 m%)
    dc: vdc = 384e-03       (84 %), step = -6e-03       (250 m%)
    dc: vdc = 378e-03     (84.2 %), step = -6e-03       (250 m%)
    dc: vdc = 372e-03     (84.5 %), step = -6e-03       (250 m%)
    dc: vdc = 366e-03     (84.8 %), step = -6e-03       (250 m%)
    dc: vdc = 360e-03       (85 %), step = -6e-03       (250 m%)
    dc: vdc = 354e-03     (85.2 %), step = -6e-03       (250 m%)
    dc: vdc = 348e-03     (85.5 %), step = -6e-03       (250 m%)
    dc: vdc = 342e-03     (85.8 %), step = -6e-03       (250 m%)
    dc: vdc = 336e-03       (86 %), step = -6e-03       (250 m%)
    dc: vdc = 330e-03     (86.2 %), step = -6e-03       (250 m%)
    dc: vdc = 324e-03     (86.5 %), step = -6e-03       (250 m%)
    dc: vdc = 318e-03     (86.8 %), step = -6e-03       (250 m%)
    dc: vdc = 312e-03       (87 %), step = -6e-03       (250 m%)
    dc: vdc = 306e-03     (87.2 %), step = -6e-03       (250 m%)
    dc: vdc = 300e-03     (87.5 %), step = -6e-03       (250 m%)
    dc: vdc = 294e-03     (87.8 %), step = -6e-03       (250 m%)
    dc: vdc = 288e-03       (88 %), step = -6e-03       (250 m%)
    dc: vdc = 282e-03     (88.2 %), step = -6e-03       (250 m%)
    dc: vdc = 276e-03     (88.5 %), step = -6e-03       (250 m%)
    dc: vdc = 270e-03     (88.8 %), step = -6e-03       (250 m%)
    dc: vdc = 264e-03       (89 %), step = -6e-03       (250 m%)
    dc: vdc = 258e-03     (89.2 %), step = -6e-03       (250 m%)
    dc: vdc = 252e-03     (89.5 %), step = -6e-03       (250 m%)
    dc: vdc = 246e-03     (89.8 %), step = -6e-03       (250 m%)
    dc: vdc = 240e-03       (90 %), step = -6e-03       (250 m%)
    dc: vdc = 234e-03     (90.2 %), step = -6e-03       (250 m%)
    dc: vdc = 228e-03     (90.5 %), step = -6e-03       (250 m%)
    dc: vdc = 222e-03     (90.8 %), step = -6e-03       (250 m%)
    dc: vdc = 216e-03       (91 %), step = -6e-03       (250 m%)
    dc: vdc = 210e-03     (91.2 %), step = -6e-03       (250 m%)
    dc: vdc = 204e-03     (91.5 %), step = -6e-03       (250 m%)
    dc: vdc = 198e-03     (91.8 %), step = -6e-03       (250 m%)
    dc: vdc = 192e-03       (92 %), step = -6e-03       (250 m%)
    dc: vdc = 186e-03     (92.2 %), step = -6e-03       (250 m%)
    dc: vdc = 180e-03     (92.5 %), step = -6e-03       (250 m%)
    dc: vdc = 174e-03     (92.8 %), step = -6e-03       (250 m%)
    dc: vdc = 168e-03       (93 %), step = -6e-03       (250 m%)
    dc: vdc = 162e-03     (93.2 %), step = -6e-03       (250 m%)
    dc: vdc = 156e-03     (93.5 %), step = -6e-03       (250 m%)
    dc: vdc = 150e-03     (93.8 %), step = -6e-03       (250 m%)
    dc: vdc = 144e-03       (94 %), step = -6e-03       (250 m%)
    dc: vdc = 138e-03     (94.2 %), step = -6e-03       (250 m%)
    dc: vdc = 132e-03     (94.5 %), step = -6e-03       (250 m%)
    dc: vdc = 126e-03     (94.8 %), step = -6e-03       (250 m%)
    dc: vdc = 120e-03       (95 %), step = -6e-03       (250 m%)
    dc: vdc = 114e-03     (95.2 %), step = -6e-03       (250 m%)
    dc: vdc = 108e-03     (95.5 %), step = -6e-03       (250 m%)
    dc: vdc = 102e-03     (95.8 %), step = -6e-03       (250 m%)
    dc: vdc = 96e-03        (96 %), step = -6e-03       (250 m%)
    dc: vdc = 90e-03      (96.2 %), step = -6e-03       (250 m%)
    dc: vdc = 84e-03      (96.5 %), step = -6e-03       (250 m%)
    dc: vdc = 78e-03      (96.8 %), step = -6e-03       (250 m%)
    dc: vdc = 72e-03        (97 %), step = -6e-03       (250 m%)
    dc: vdc = 66e-03      (97.2 %), step = -6e-03       (250 m%)
    dc: vdc = 60e-03      (97.5 %), step = -6e-03       (250 m%)
    dc: vdc = 54e-03      (97.8 %), step = -6e-03       (250 m%)
    dc: vdc = 48e-03        (98 %), step = -6e-03       (250 m%)
    dc: vdc = 42e-03      (98.2 %), step = -6e-03       (250 m%)
    dc: vdc = 36e-03      (98.5 %), step = -6e-03       (250 m%)
    dc: vdc = 30e-03      (98.8 %), step = -6e-03       (250 m%)
    dc: vdc = 24e-03        (99 %), step = -6e-03       (250 m%)
    dc: vdc = 18e-03      (99.2 %), step = -6e-03       (250 m%)
    dc: vdc = 12e-03      (99.5 %), step = -6e-03       (250 m%)
    dc: vdc = 6e-03       (99.8 %), step = -6e-03       (250 m%)
    dc: vdc = 0            (100 %), step = -6e-03       (250 m%)
Total time required for dc analysis `dc': CPU = 184.972 ms, elapsed = 208.752 ms.
Time accumulated: CPU = 596.908 ms, elapsed = 979.265 ms.
Peak resident memory used = 62.9 Mbytes.


Notice from spectre.
    192 notices suppressed.

modelParameter: writing model parameter values to rawfile.
element: writing instance parameter values to rawfile.
outputParameter: writing output parameter values to rawfile.
designParamVals: writing netlist parameters to rawfile.
primitives: writing primitives to rawfile.
subckts: writing subcircuits to rawfile.

******************************

INPUT.SCS

******************************

// Generated for: spectre
// Generated on: Apr  6 19:23:51 2016
// Design library name: Huan
// Design cell name: Hys_Comp
// Design view name: schematic
simulator lang=spectre
global 0 vdd!
parameters vdc=0.6
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio3
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio_dnw
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_sa
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfind
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rtmom
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bbmvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfesd
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_mim
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfrtmom
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_hri
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_rpo
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3vna
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_m
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmos
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmim
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfjvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3m
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_res
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bip3
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bip
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3v
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmos33
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_na
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfsbd

// Library name: Huan
// Cell name: Hys_Comp
// View name: schematic
V4 (VP 0) vsource dc=vdc type=dc
V3 (net22 0) vsource dc=600.0m type=dc
V1 (VN 0) vsource dc=600.0m type=dc
V0 (vdd! 0) vsource dc=1.2 type=dc
M10 (VOUT net01 0 0) nch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M8 (net01 net01 0 0) nch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M6 (net25 VP net19 net19) nch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M3 (net24 VN net19 net19) nch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M0 (net19 net22 0 0) nch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M9 (VOUT net25 vdd! vdd!) pch l=1u w=350.0n m=2 ad=1.232e-13 as=2.114e-13 \
        pd=1.04u ps=1.88u nrd=0.885714 nrs=0.885714
M7 (net01 net24 vdd! vdd!) pch l=1u w=350.0n m=2 ad=1.232e-13 as=2.114e-13 \
        pd=1.04u ps=1.88u nrd=0.885714 nrs=0.885714
M5 (net24 net25 vdd! vdd!) pch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M4 (net25 net25 vdd! vdd!) pch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M2 (net24 net24 vdd! vdd!) pch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
M1 (net25 net24 vdd! vdd!) pch l=1u w=350.0n m=1 ad=2.114e-13 as=2.114e-13 \
        pd=1.88u ps=1.88u nrd=0.885714 nrs=0.885714
simulatorOptions options reltol=1e-3 vabstol=1e-6 iabstol=1e-12 temp=27 \
    tnom=27 scalem=1.0 scale=1.0 gmin=1e-12 rforce=1 maxnotes=5 maxwarns=5 \
    digits=5 cols=80 pivrel=1e-3 sensfile="../psf/sens.output" \
    checklimitdest=psf rampsource=no
dcOp dc write="spectre.dc" maxiters=150 maxsteps=10000 annotate=status
dcOpInfo info what=oppoint where=rawfile
dc dc hysteresis=yes param=vdc start=0 stop=1.2 lin=200 oppoint=rawfile \
    maxiters=150 maxsteps=10000 annotate=status
modelParameter info what=models where=rawfile
element info what=inst where=rawfile
outputParameter info what=output where=rawfile
designParamVals info what=parameters where=rawfile
primitives info what=primitives where=rawfile
subckts info what=subckts  where=rawfile
saveOptions options save=allpub

I checked in MMSIM14.1 ISR17 with your circuit. I added a transient analysis too - I changed V4 to:

V4 (VP 0) vsource dc=vdc type=pulse val0=0 val1=1.2 rise=1m period=2m width=0 delay=0

and added:

dc dc hysteresis=yes param=vdc start=0.5 stop=0.7 lin=200 \
maxiters=150 maxsteps=10000 annotate=status
tran tran stop=2m

(the dc is narrower - I removed the oppoint just in case but I don't think that's critical). Here's what I got:

If I really zoom in you can see there's a tiny amount of hysteresis. From the transient slow ramp up and down of VP, there appears to be no significant hysteresis in the circuit (the transition is almost exactly at 0.6V for rise and fall ramp).

So are you sure your circuit actually exhibits hysteresis?

BTW, I just re-tested in 13.1.1.049 and see identical results to the above picture.

Regards,

Andrew.

Hi,

I have just run as your setup. However, the hysteresis doesn't show in DC analysis (it is really small but it has).

Here is the result when I run.

With transisent, I convert it using Y vs Y and the hysteresis shows but as you say it is very small.

The DC analysis shows nothing. I zoomed it in but couldn't see any.

I don't think that's hysteresis you're seeing in the transient. If you change the period of the ramp, the size of the "eye" in the transient reduces - suggesting that it's a capacitative effect rather than hysteresis.

In other words, if you change:

V4 (VP 0) vsource dc=vdc type=pulse val0=0 val1=1.2 rise=100m period=200m width=0 delay=0

and then run the transient for 200m instead of 2m. The gap is significantly smaller.

Regards,

Andrew.

Hi,

You are an expert! I changed some parameters of the circuit and now I can see hysteresis in both transient and DC analysis now.

Just curious, is there a concept "size of the eye" used in the software or in a particular analysis?

The "size of the eye" was a throwaway comment because the graph is somewhat like an eye diagram (not really because that's usually for clocked systems where you have jitter causing the position of edges to move back and forth). With eye diagrams you have the idea of an eye width - but that's not how you'd measure it here.

You can measure the width of the opening - which corresponds to the hysteresis - by doing something like:

cross(v("/VOUT" ?result "dc") 0.6 1 "rising" nil nil  )-cross(v("/VOUT" ?result "dc") 0.6 1 "falling" nil nil  )

Note that the resolution will be limited to the step size you use in the dc sweep.

Regards,

Andrew.