| * Bipolar transistor I-V characteristic |
| |
| * Include SkyWater sky130 device models |
| .include "../../../models/corners/tt/nonfet.spice" |
| .include "../../../models/sky130_fd_pr__model__pnp.model.spice" |
| |
| * Base bias |
| Rb 1 2 680 |
| X1 3 2 5 5 sky130_fd_pr__pnp_05v5_W0p68L0p68 M=1 |
| Rc 3 4 100 |
| |
| * DC source for current measure |
| Vic 0 4 DC 0V |
| Vbb 5 1 DC 0V |
| Vce 5 0 DC 0V |
| |
| .control |
| * Sweep Vce from 0 to 1.8V |
| dc Vce 0 1.8 0.01 Vbb 0 1.2 0.01 |
| let vc1 = V(5) - V(3) |
| let vb1 = V(5) - V(2) |
| wrdata sky130_fd_pr__pnp_05v5_W0p68L0p68__iv.data -Vic#branch vb1 vc1 |
| |
| * Sweep Vce from 0 to 3.3V, Vbb from 0 to 2.0V |
| dc Vce 0 3.3 0.02 Vbb 0.6 0.9 0.01 |
| let beta = Vic#branch / Vbb#branch |
| let vc2 = V(5) - V(3) |
| let vb2 = V(5) - V(2) |
| wrdata sky130_fd_pr__pnp_05v5_W0p68L0p68__beta.data beta vb2 vc2 |
| echo maximum beta |
| print maximum(beta) |
| quit |
| .endc |
| .end |
