2 stage op-amp, conected as voltage follower 02/16/88 * m1 3 6 5 8 cmosn w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m2 4 1 5 8 cmosn w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m3 3 3 9 9 cmosp w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m4 4 3 9 9 cmosp w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m5 5 7 8 8 cmosn w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m6 6 4 9 9 cmosp w=9u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m7 6 7 8 8 cmosn w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 m8 7 7 8 8 cmosn w=5u l=5u ad=45p as=45p pd=28u ps=28u nrd=1.8 nrs=1.8 cc 4 6 5.0p ib 9 7 .36u vdd 9 0 2.5 vss 8 0 -2.5 cl 6 0 20p * vin 1 0 dc pulse(-1.0 1.0 200u 1u 1u 300u 600u) ac=1 * .model cmosn nmos (level=2 ld=0.265073u tox=418.0e-10 + nsub=1.53142e+16 vto=0.844345 kp=4.15964e-05 gamma=0.863074 + phi=0.6 uo=503.521 uexp=0.163917 ucrit=161166 + delta=1e-06 vmax=55903.5 xj=0.400000u lambda=0.01 + nfs=3.5934e+12 neff=1.001 nss=1e+12 tpg=1.000000 + rsh=29.3 cgdo=2.18971e-10 cgso=2.18971e-10 + cj=0.0003844 mj=0.488400 cjsw=5.272e-10 mjsw=0.300200 pb=0.700000) .model cmosp pmos (level=2 ld=0.299878u tox=418.0e-10 + nsub=4.19363e+15 vto=-0.79089 kp=1.64047e-05 gamma=0.451645 + phi=0.6 uo=198.577 uexp=0.343935 ucrit=110988 + delta=0.956806 vmax=41456.3 xj=0.400000u lambda=0.02 + nfs=1e+12 neff=1.001 nss=1e+12 tpg=-1.000000 + rsh=107.6 cgdo=2.47722e-10 cgso=2.47722e-10 + cj=0.0002281 mj=0.508000 cjsw=3.077e-10 mjsw=0.193500 pb=0.740000) * .print op iter(0) v(nodes) .op * .plot ac vdb(6) (-90,30) vp(6) (-180,180) .ac dec 5 1 10meg *ac steps start stop * .plot dc v(6) (-4,4) .dc vin -5 5 .2 *dc start stop stepsize * .plot tran v(6) (-4,4) .tran 10u 1000u 0 *tran step stop start .end