| * Bipolar transistor I-V characteristic |
| |
| .lib ../../../libraries/sky130_fd_pr/v0.20.1/models/sky130.lib.spice tt |
| |
| * Base bias |
| Rb 1 2 680 |
| X1 3 2 5 5 sky130_fd_pr__rf_pnp_05v5 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 sky130_fd_pr__rf_pnp_05v5_beta.data beta vb vc |
| echo maximum beta |
| print maximum(beta) |
| quit |
| .endc |
| .end |
