| * Bipolar transistor I-V characteristic | |
| .lib ../../../libraries/sky130_fd_pr/PDKVERSION/models/sky130.lib.spice CORNER | |
| * Base bias | |
| Rb 1 2 680 | |
| X1 3 2 5 5 DEVICENAME 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 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 vc = V(5) - V(3) | |
| let vb = V(5) - V(2) | |
| wrdata DEVICENAME_beta.data beta vb vc | |
| echo maximum beta | |
| print maximum(beta) | |
| quit | |
| .endc | |
| .end |