| * SPICE3 file created from opamp1.ext - technology: sky130A | |
| .lib "sky130_fd_pr/models/sky130.lib.spice" tt | |
| X0 vo vg gnd gnd sky130_fd_pr__nfet_01v8 w=9.99 l=.56 | |
| X1 vg vg gnd gnd sky130_fd_pr__nfet_01v8 w=9.99 l=.56 | |
| X2 vdd vbias a_80_n503# vdd sky130_fd_pr__pfet_01v8 w=10.04 l=.48 | |
| X3 a_80_n503# vinp vg w_n634_n1455# sky130_fd_pr__pfet_01v8 w=25.12 l=.52 | |
| X4 a_80_n503# vinm vo w_n634_n1455# sky130_fd_pr__pfet_01v8 w=25.12 l=.52 | |
| C0 vo gnd 2.84fF | |
| C1 vg gnd 5.66fF | |
| C2 vinm gnd 2.16fF | |
| C3 vinp gnd 2.11fF | |
| C4 a_80_n503# gnd 5.06fF | |
| C5 w_n634_n1455# gnd 116.48fF | |
| C6 vdd gnd 144.35fF | |
| ******* DC supply info****** | |
| VDD vdd GND 5 | |
| VBIAS vbias 0 3.9 | |
| *******Transient analysis AC Source******** | |
| *VINP vinp 0 SIN(3.9 1m 10k 0 0 0) | |
| *VINM vinm 0 SIN(3.9 1m 10k 0 0 180) | |
| *******AC analysis AC Source****** | |
| VINP vinp 0 dc 3.9 ac 1 | |
| VINM vinm 0 dc 3.9 ac -1 | |
| *******Tran command******* | |
| *.tran 0.1us 1000us | |
| ********Transient Plot ****** | |
| .control | |
| run | |
| *plot V(vinp) V(vinm) | |
| *plot V(vo) | |
| *plot V(vdd) V(vbias) | |
| ******AC Command***** | |
| ac dec 100 1 100meg | |
| *Magnitude dB plot for v(vo) on log scale | |
| plot vdb(vo) xlog | |
| *Phase degrees plot for v(vo) on log scale | |
| let outd = 57.29*vp(vo) | |
| settype phase outd | |
| plot outd xlimit 1 100meg ylabel 'phase' | |
| let pm = outd + 180 | |
| settype phase pm | |
| plot pm xlimit 1 100meg ylabel 'Phase Margin' | |
| .endc | |
| .end |