| * Self-biased current source testbench - SS corner |
| |
| * Include SkyWater sky130 device models |
| .lib "/usr/share/pdk/sky130A/libs.tech/ngspice/sky130.lib.spice" ff |
| .param mc_mm_switch=0 |
| |
| .include "../mag/sbcs1v8.spice" |
| |
| * supply voltages |
| vdda vdda 0 1.8 pulse(10m 1.8 0 1u 10u 10 1) |
| vssa vssa 0 0.0 |
| |
| * DUT |
| x0 io vdda vssa x sbcs1v8 |
| vo io vssa 0.0 |
| |
| .option gmin=1e-12 |
| .control |
| dc vdda 10m 1.8 10m |
| let dc_vdd_io = i(vo) |
| plot dc_vdd_io ylimit 0 500n |
| wrdata ../data/ff_dc_vdd_io.txt dc_vdd_io |
| let psrr = abs(deriv(i(vo))/i(vo)) |
| plot dc_vdd_psrr ylog |
| wrdata ../data/ff_dc_vdd_psrr.txt dc_vdd_psrr |
| |
| |
| dc temp -40 125 1 |
| let dc_temp_io = i(vo) |
| plot dc_temp_io ylimit 220n 360n |
| wrdata ../data/ff_dc_temp_io.txt dc_temp_io |
| |
| tran 100n 20u |
| let tran_io = i(vo) |
| plot tran_io ylimit 0 1u |
| plot vdda |
| wrdata ../data/ff_tran_io.txt tran_io |
| wrdata ../data/ff_tran_vdda.txt vdda |
| |
| reset |
| op |
| print i(vdda) |
| print i(vo) |
| |
| .endc |
| |
| .end |
