| * General Purpose Bandgap Reference circuit avsdbgp_3v3- Technology: sky130 |
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| .options savecurrents |
| .lib "../../libs/models/sky130.lib.spice" tt |
| .include "../../libs/models/sky130_fd_pr__model__pnp.model.spice" |
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| *BGR circuit |
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| XM1 A C VPWR VPWR sky130_fd_pr__pfet_g5v0d10v5 l=5 w=20 |
| XM2 C C VPWR VPWR sky130_fd_pr__pfet_g5v0d10v5 l=5 w=20 |
| XM3 H C VPWR VPWR sky130_fd_pr__pfet_g5v0d10v5 l=5 w=20 |
| XM4 A A B GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
| XM5 C A D GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
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| X6 GND GND I GND sky130_fd_pr__pnp_05v5_W3p40L3p40 M=1 |
| X7 GND GND E GND sky130_fd_pr__pnp_05v5_W3p40L3p40 M=8 |
| X8 GND GND F GND sky130_fd_pr__pnp_05v5_W3p40L3p40 M=1 |
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| *Start-up circuit |
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| XM9 C G GND GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
| XM10 G A GND GND sky130_fd_pr__nfet_g5v0d10v5 l=1 w=20 |
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| *Enable circuit |
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| XM11 B En Vx GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
| XM12 D En Vy GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
| XM13 H En Vz GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
| XM14 K En G GND sky130_fd_pr__nfet_g5v0d10v5 l=5 w=20 |
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| R1 J E 30K |
| R2 F VBGP 273K |
| R3 GND VBGP 100MEG |
| R4 VPWR Vw 200K |
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| Vsrc Vx I DC 0V |
| Vsrc1 Vy J DC 0V |
| Vsrc2 Vz VBGP DC 0V |
| Vsrc3 Vw K DC 0V |
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| VDDA VPWR GND DC 3.3V |
| VD En GND DC 3.3V |
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| .dc VDDA 2 4 0.1 |
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| .control |
| run |
| plot deriv(v(VBGP)) |
| .endc |
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| .end |
