xschem/bandgap_core_mod/verification/bandgap_core_stability_ptat_single.sch

v { version=2.9.8 file_version=1.2}
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N 2290 -830 2500 -830 {lab=#net4}
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N 2570 -120 2570 -60 {lab=#net4}
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N 2480 -60 2500 -60 {lab=GND}
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N 2110 0 2480 0 {lab=GND}
N 1650 -1050 1720 -1050 {lab=ctat}
N 2230 -570 2230 -450 {lab=ctat}
N 2190 -450 2230 -450 {lab=ctat}
N 1720 -570 1720 -550 {lab=ctat}
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N 1720 -490 1720 -430 { lab=#net1}
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N 440 -1150 470 -1150 {lab=#net2}
N 0 -1150 60 -1150 { lab=#net2}
N 0 -630 0 0 { lab=GND}
N 0 -1150 0 -690 { lab=#net2}
N 310 -770 930 -770 { lab=ptat}
N 960 -1120 970 -1120 { lab=#net2}
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N 1560 -470 1560 -220 { lab=#net3}
N 2790 -880 2790 -90 { lab=cas}
N 2500 -830 2500 -120 { lab=#net4}
N 2110 -390 2110 0 { lab=GND}
N 1070 -160 1070 -90 {lab=#net11}
N 2790 -1150 2790 -1080 {lab=#net2}
N 2830 -1050 2870 -1050 {lab=cas}
N 2870 -1050 2870 -970 {lab=cas}
N 2790 -1020 2790 -990 {lab=#net12}
N 2770 -1050 2790 -1050 {lab=#net2}
N 2770 -1150 2770 -1050 {lab=#net2}
N 2770 -1150 2790 -1150 {lab=#net2}
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N 2770 -970 2790 -970 { lab=#net2}
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N 2870 -970 2870 -880 { lab=cas}
N 2790 -880 2870 -880 { lab=cas}
N 2790 -940 2790 -880 { lab=cas}
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N 540 -530 840 -530 { lab=#net13}
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N 310 -510 360 -510 { lab=ptat}
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N 620 -530 620 -460 { lab=#net13}
C {bandgap_opamp/bandgap_opamp.sym} 440 -510 0 1 {name=x1}
C {bandgap_opamp/bandgap_opamp.sym} 2110 -450 0 0 {name=x2}
C {lab_wire.sym} 980 -1050 0 0 {name=l1 sig_type=std_logic lab=ptat}
C {lab_wire.sym} 1220 -1050 0 0 {name=l2 sig_type=std_logic lab=ptat}
C {lab_wire.sym} 1650 -1050 0 1 {name=l3 sig_type=std_logic lab=ctat}
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C {lab_wire.sym} 1650 -970 0 1 {name=l6 sig_type=std_logic lab=cas}
C {lab_wire.sym} 2200 -970 0 0 {name=l7 sig_type=std_logic lab=cas}
C {lab_wire.sym} 2410 -970 0 0 {name=l8 sig_type=std_logic lab=cas}
C {lab_wire.sym} 2200 -1050 0 0 {name=l9 sig_type=std_logic lab=ptat}
C {lab_wire.sym} 2410 -1050 0 0 {name=l10 sig_type=std_logic lab=ctat}
C {sky130_fd_pr/nfet_01v8_lvt.sym} 2520 -60 0 1 {name=M3
L=8
W=7
ad="[expr @W *0.29]" pd="[expr 2*(@W + 0.29)]"
as="[expr @W *0.29]" ps="[expr 2*(@W + 0.29)]"
nrd="[expr 0.29/@W ]" nrs="[expr 0.29/@W ]"
sa=0 sb=0 sd=0
nf=1 mult=2
model=nfet_01v8_lvt
spiceprefix=X
}
C {sky130_fd_pr/nfet_01v8_lvt.sym} 2770 -60 0 0 {name=M1
L=8
W=7
ad="[expr @W *0.29]" pd="[expr 2*(@W + 0.29)]"
as="[expr @W *0.29]" ps="[expr 2*(@W + 0.29)]"
nrd="[expr 0.29/@W ]" nrs="[expr 0.29/@W ]"
sa=0 sb=0 sd=0
nf=1 mult=2
model=nfet_01v8_lvt
spiceprefix=X
}
C {spice_probe.sym} 1070 -530 0 0 {name=p6 analysis=tran voltage=0.7342}
C {spice_probe.sym} 1310 -490 0 0 {name=p7 analysis=tran voltage=0.7341}
C {spice_probe.sym} 1560 -470 0 0 {name=p8 analysis=tran voltage=0.7341}
C {spice_probe.sym} 1650 -970 0 0 {name=p12 analysis=tran voltage=0.5687}
C {ammeter.sym} 470 -600 0 0 {name=v2 current=7.5997e-06}
C {bandgap_cascurr_cell/bandgap_cascurr_cell.sym} 1070 -1010 0 0 {name=x5 m=8}
C {bandgap_cascurr_cell/bandgap_cascurr_cell.sym} 1310 -1010 0 0 {name=x6 m=8}
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spiceprefix=X
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C {ammeter.sym} 1310 -640 0 0 {name=v5 current=7.9257e-06}
C {ammeter.sym} 1560 -640 0 0 {name=v6 current=1.2106e-05}
C {capa.sym} 1720 -520 0 0 {name=C1
m=1
value=1m
footprint=1206
device="ceramic capacitor"}
C {spice_probe.sym} 470 -810 0 1 {name=p11 analysis=tran voltage=0.8189}
C {spice_probe.sym} 1780 -570 0 0 {name=p9 analysis=tran voltage=1.004}
C {bandgap_bmr/bandgap_bmr.sym} 200 -940 0 0 {name=x8}
C {sky130_fd_pr/pfet_01v8_lvt.sym} 490 -970 0 1 {name=Mcurr
L=8
W=5
ad="'W * 0.29'" pd="'2 * (W + 0.29)'"
as="'W * 0.29'" ps="'2 * (W + 0.29)'"
nrd="'0.29 / W'" nrs="'0.29 / W'"
sa=0 sb=0 sd=0
nf=1 mult=4
model=pfet_01v8_lvt
spiceprefix=X
}
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C {lab_wire.sym} 510 -970 0 1 {name=l13 sig_type=std_logic lab=bmr_biasv}
C {sky130_fd_pr/pfet_01v8_lvt.sym} 2060 -750 0 0 {name=Mcurr1
L=8
W=5
ad="'W * 0.29'" pd="'2 * (W + 0.29)'"
as="'W * 0.29'" ps="'2 * (W + 0.29)'"
nrd="'0.29 / W'" nrs="'0.29 / W'"
sa=0 sb=0 sd=0
nf=1 mult=4
model=pfet_01v8_lvt
spiceprefix=X
}
C {lab_wire.sym} 2040 -750 0 0 {name=l14 sig_type=std_logic lab=bmr_biasv}
C {vsource.sym} 0 -660 0 0 {name=Vdd value=\{vdd\}}
C {gnd.sym} 0 0 0 0 {name=l15 lab=GND}
C {lab_wire.sym} 920 -530 0 1 {name=l16 sig_type=std_logic lab=ac}
C {sky130_fd_pr/pfet_01v8_lvt.sym} 930 -1100 1 1 {name=Mcurr2
L=8
W=7
ad="'W * 0.29'" pd="'2 * (W + 0.29)'"
as="'W * 0.29'" ps="'2 * (W + 0.29)'"
nrd="'0.29 / W'" nrs="'0.29 / W'"
sa=0 sb=0 sd=0
nf=1 mult=32
model=pfet_01v8_lvt
spiceprefix=X
}
C {vsource.sym} 620 -70 0 0 {name=Vin1 value="dc=0 ac=1"}
C {code.sym} 2470 -1370 0 0 {name=simulation only_toplevel=false value="
.temp 27

.lib "sky130_fd_pr/models/sky130.lib.spice" tt
.include sky130_fd_pr/models/sky130_fd_pr__model__pnp.model.spice

.param vdd=1.8

.save all

.ac dec 10 1 1G

.control
   run
   setplot ac1
   set units=degrees
   gnuplot bandgap_core_stability_ptat db(ac) ph(ac)
.endc
"}
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value=1u
device=resistor
m=1
ac=1G}
C {res_ac.sym} 620 -430 2 0 {name=R6
value=1G
device=resistor
m=1
ac=1u}
C {sky130_fd_pr/pfet_01v8_lvt.sym} 2810 -1050 0 1 {name=Mtri_bias_cas
L=8
W=5
ad="'W * 0.29'" pd="'2 * (W + 0.29)'"
as="'W * 0.29'" ps="'2 * (W + 0.29)'"
nrd="'0.29 / W'" nrs="'0.29 / W'"
sa=0 sb=0 sd=0
nf=1 mult=2
model=pfet_01v8_lvt
spiceprefix=X
}
C {sky130_fd_pr/pfet_01v8_lvt.sym} 2810 -970 0 1 {name=Mcas_bias
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ad="'W * 0.29'" pd="'2 * (W + 0.29)'"
as="'W * 0.29'" ps="'2 * (W + 0.29)'"
nrd="'0.29 / W'" nrs="'0.29 / W'"
sa=0 sb=0 sd=0
nf=1 mult=4
model=pfet_01v8_lvt
spiceprefix=X
}
C {lab_wire.sym} 2800 -880 0 1 {name=l11 sig_type=std_logic lab=cas}
C {res.sym} 1070 -190 0 0 {name=R2
value=6.624k
footprint=1206
device=resistor
m=1}
C {res.sym} 1560 -190 0 0 {name=R1
value=51.16k
footprint=1206
device=resistor
m=1}