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Diffstat (limited to 'Windows/spice/examples/xspice/pll/test_vco.cir')
| -rw-r--r-- | Windows/spice/examples/xspice/pll/test_vco.cir | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/Windows/spice/examples/xspice/pll/test_vco.cir b/Windows/spice/examples/xspice/pll/test_vco.cir new file mode 100644 index 00000000..522eac00 --- /dev/null +++ b/Windows/spice/examples/xspice/pll/test_vco.cir @@ -0,0 +1,158 @@ +* Test of VCO: frequency versus control voltage +* 7 stage Ring-Osc. made of gain cells BSIM3 +* P.-H. Hsieh, J. Maxey, C.-K. K. Yang, IEEE JSSC, Sept. 2009, pp. 2488 - 2495 +* alternatively use d_osc code model +* measure frequency of R.O. by fft + +.param vcc=3.3 +.csparam simtime=500n + +vdd dd 0 dc 'vcc' +vco cont 0 dc 2.5 + +* vco +* buf: analog out +* d_digout: digital out +* cont: analog control voltage +* dd: analog supply voltage +*.include vco_sub.cir +*xvco buf d_digout cont dd ro_vco +.include vco_sub_new.cir +xvco buf d_digout cont dd d_osc_vco + +.option noacct + +.control +set xtrtol=2 +set dt = $curplot +set curplot = new +set curplottitle = "Frequency versus voltage" +set freq_volt = $curplot $ store its name to 'freq_volt' +setplot $freq_volt +let vcovec=vector(5) +let foscvec=vector(5) +setplot $dt +alter vco 0.5 +tran 0.1n $&simtime 0 +let {$freq_volt}.vcovec[0]=v(cont) +linearize buf +fft buf +* start meas at freq > 0 to skip large dc part +meas sp fosc MAX_AT buf from=1e3 to=1e9 +let {$freq_volt}.foscvec[0]=fosc +plot d_digout xlimit 140n 160n +reset +alter vco 1 +tran 0.1n $&simtime 0 +let {$freq_volt}.vcovec[1]=v(cont) +linearize buf +fft buf +meas sp fosc MAX_AT buf from=1e3 to=1e9 +let {$freq_volt}.foscvec[1]=fosc +plot d_digout xlimit 140n 160n +reset +alter vco 1.5 +tran 0.1n $&simtime 0 +let {$freq_volt}.vcovec[2]=v(cont) +linearize buf +fft buf +meas sp fosc MAX_AT buf from=1e3 to=1e9 +let {$freq_volt}.foscvec[2]=fosc +plot d_digout xlimit 140n 160n +reset +alter vco 2 +tran 0.1n $&simtime 0 +let {$freq_volt}.vcovec[3]=v(cont) +linearize buf +fft buf +meas sp fosc MAX_AT buf from=1e3 to=1e9 +let {$freq_volt}.foscvec[3]=fosc +plot d_digout xlimit 140n 160n +reset +alter vco 2.5 +tran 0.1n $&simtime 0 +let {$freq_volt}.vcovec[4]=v(cont) +linearize buf +fft buf +meas sp fosc MAX_AT buf from=1e3 to=1e9 +let {$freq_volt}.foscvec[4]=fosc +plot d_digout xlimit 140n 160n +plot tran1.buf tran3.buf tran5.buf tran7.buf tran9.buf xlimit 140n 160n +plot mag(sp2.buf) mag(sp4.buf) mag(sp6.buf) mag(sp8.buf) mag(sp10.buf) xlimit 100e6 1100e6 +setplot $freq_volt +settype frequency foscvec +settype voltage vcovec +plot foscvec vs vcovec +print vcovec foscvec +rusage +.endc + +*model = bsim3v3 +*Berkeley Spice Compatibility +* Lmin= .35 Lmax= 20 Wmin= .6 Wmax= 20 +.model N1 NMOS +*+version = 3.2.4 ++version = 3.3.0 ++Level= 8 ++Tnom=27.0 ++Nch= 2.498E+17 Tox=9E-09 Xj=1.00000E-07 ++Lint=9.36e-8 Wint=1.47e-7 ++Vth0= .6322 K1= .756 K2= -3.83e-2 K3= -2.612 ++Dvt0= 2.812 Dvt1= 0.462 Dvt2=-9.17e-2 ++Nlx= 3.52291E-08 W0= 1.163e-6 ++K3b= 2.233 ++Vsat= 86301.58 Ua= 6.47e-9 Ub= 4.23e-18 Uc=-4.706281E-11 ++Rdsw= 650 U0= 388.3203 wr=1 ++A0= .3496967 Ags=.1 B0=0.546 B1= 1 ++ Dwg = -6.0E-09 Dwb = -3.56E-09 Prwb = -.213 ++Keta=-3.605872E-02 A1= 2.778747E-02 A2= .9 ++Voff=-6.735529E-02 NFactor= 1.139926 Cit= 1.622527E-04 ++Cdsc=-2.147181E-05 ++Cdscb= 0 Dvt0w = 0 Dvt1w = 0 Dvt2w = 0 ++ Cdscd = 0 Prwg = 0 ++Eta0= 1.0281729E-02 Etab=-5.042203E-03 ++Dsub= .31871233 ++Pclm= 1.114846 Pdiblc1= 2.45357E-03 Pdiblc2= 6.406289E-03 ++Drout= .31871233 Pscbe1= 5000000 Pscbe2= 5E-09 Pdiblcb = -.234 ++Pvag= 0 delta=0.01 ++ Wl = 0 Ww = -1.420242E-09 Wwl = 0 ++ Wln = 0 Wwn = .2613948 Ll = 1.300902E-10 ++ Lw = 0 Lwl = 0 Lln = .316394 ++ Lwn = 0 ++kt1=-.3 kt2=-.051 ++At= 22400 ++Ute=-1.48 ++Ua1= 3.31E-10 Ub1= 2.61E-19 Uc1= -3.42e-10 ++Kt1l=0 Prt=764.3 + +.model P1 PMOS +*+version = 3.2.4 ++version = 3.3.0 ++Level= 8 ++Tnom=27.0 ++Nch= 3.533024E+17 Tox=9E-09 Xj=1.00000E-07 ++Lint=6.23e-8 Wint=1.22e-7 ++Vth0=-.6732829 K1= .8362093 K2=-8.606622E-02 K3= 1.82 ++Dvt0= 1.903801 Dvt1= .5333922 Dvt2=-.1862677 ++Nlx= 1.28e-8 W0= 2.1e-6 ++K3b= -0.24 Prwg=-0.001 Prwb=-0.323 ++Vsat= 103503.2 Ua= 1.39995E-09 Ub= 1.e-19 Uc=-2.73e-11 ++ Rdsw= 460 U0= 138.7609 ++A0= .4716551 Ags=0.12 ++Keta=-1.871516E-03 A1= .3417965 A2= 0.83 ++Voff=-.074182 NFactor= 1.54389 Cit=-1.015667E-03 ++Cdsc= 8.937517E-04 ++Cdscb= 1.45e-4 Cdscd=1.04e-4 ++ Dvt0w=0.232 Dvt1w=4.5e6 Dvt2w=-0.0023 ++Eta0= 6.024776E-02 Etab=-4.64593E-03 ++Dsub= .23222404 ++Pclm= .989 Pdiblc1= 2.07418E-02 Pdiblc2= 1.33813E-3 ++Drout= .3222404 Pscbe1= 118000 Pscbe2= 1E-09 ++Pvag= 0 ++kt1= -0.25 kt2= -0.032 prt=64.5 ++At= 33000 ++Ute= -1.5 ++Ua1= 4.312e-9 Ub1= 6.65e-19 Uc1= 0 ++Kt1l=0 + +.end |