* comparator Simulation
* this file edited to remove everything not in tt lib
.lib "~/open_sky130/sky130_fd_pr/models/sky130.lib.spice" tt
.include comparator.spice
.include comparator-preamp.spice
.include comparator-decision.spice
.include comparator-diffamp.spice


* instantiate the comparator
Xcomp VGND VDD3v3 VDD1v8 VOUT BIASN VN VP comparator
Xpre VP VN VPAMP VNAMP VI BIASN VGND VDD3v3 comparator-preamp
Xdec VPAMP VNAMP VOP VON VGND VDD3v3 comparator-decision
Xdiff VOP VON VOUT2 VGND VDD1v8 comparator-diffamp

* set gnd and power
Vgnd VGND 0 0
Vdd3v3 VDD3v3 VGND 3
Vdd1v8 VDD1v8  VGND 1.8

* set bias voltage
Vbias BIASN VGND 0.3

VNin VN VGND 1.5


* create VP-in
*VPin VP VGND pulse(0 3 1p 1n 1n 1n 2n)
VPin VP VGND SINE(1.5 0.05 10000k)
*VPin VP VGND 1.5

.tran 10e-12 200e-09 0e-00
.dc VPin 0 3 0.002 VNin 0 3 0.2

.control
run
set color0 = white
set color1 = black
plot VOUT VOUT2 VP VN VDD3v3
plot i(Vdd3v3) i(Vdd1v8)
.endc

.end