Hi @User, when running PEX on my bandgap, the top-level

bgr_top

seems to have two additional connections

(null)

and

bgr_ptat_ctat_0/bgr_amp_0/bgr_amp_overlay_half_1/m3_195_n7414#

at the top level.

.subckt bgr_top vdd vss vref ir20u (null) bgr_ptat_ctat_0/bgr_amp_0/bgr_amp_overlay_half_1/m3_195_n7414#

I've noticed that the

(null)

net seems to come from a device

sky130_fd_pr__pnp_05v5

of which there are multiple instances like the one below each of which have the net

(null)

as the last connection as follows.

X8 vss vss bgr_ptat_ctat_0/bgr_pnp_array_0/e3 (null) sky130_fd_pr__pnp_05v5 area=0p

I can't find a spice model definition for the

sky130_fd_pr__pnp_05v5

device in the PDK either and it is only extracted when performing paracitic extraction. When I extract for LVS I only get instances of the expected

sky130_fd_pr__pnp_05v5_W3p40L3p40

device. Do you know what it is and why it's being extracted? Also do you know what the extra two nets are doing in the top level? Cheers

PEX extraction currently doesn't work on capacitors and bipolars. Adding that is at the top of my to-do list after finishing up isolated substrate region extraction in magic.

Ah terrific, thank you, Tim