* SPICE3 file created from opamp2.ext - technology: sky130A

.lib "sky130_fd_pr/models/sky130.lib.spice" tt

X0 a_n24_1551# vinm vo w_n738_599# sky130_fd_pr__pfet_01v8 w=25.12 l=.52
X1 a_n24_1551# vinp vg w_n738_599# sky130_fd_pr__pfet_01v8 w=25.12 l=.52
X2 top vout sky130_fd_pr__cap_mim_m3_1 l=9.97 w=9.97
X3 vdd vbias vout vdd sky130_fd_pr__pfet_01v8 w=10.16 l=.50
X4 vg vg gnd gnd sky130_fd_pr__nfet_01v8 w=9.99 l=.56
X5 vout vo gnd gnd sky130_fd_pr__nfet_01v8 w=25.20 l=.53
X6 vo top gnd sky130_fd_pr__res_generic_nd w=2.0 l=.51
X7 vdd vbias a_n24_1551# vdd sky130_fd_pr__pfet_01v8 w=10.04 l=.48
X8 vo vg gnd gnd sky130_fd_pr__nfet_01v8 w=9.99 l=.56
C0 top vout 3.49fF
C1 top gnd 6.14fF
C2 vout gnd 21.51fF
C3 vo gnd 11.59fF
C4 vg gnd 5.66fF
C5 vinm gnd 2.16fF
C6 vinp gnd 2.11fF
C7 a_n24_1551# gnd 5.06fF
C8 vbias gnd 10.03fF
C9 w_n738_599# gnd 91.23fF
C10 vdd gnd 207.16fF

******* 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 1000meg
*Magnitude dB plot for v(vout) on log scale
plot vdb(vout) xlog

*Phase degrees plot for v(vout) on log scale
let outd = 57.29*vp(vout)
settype phase outd
plot outd xlimit 1 1000meg ylabel 'phase'
let pm = outd + 180
settype phase pm
plot pm xlimit 1 1000meg ylabel 'Phase Margin'

.endc
.end