Hi, does someone know how to use the

ppolyf_u_2k

resistors on klayout? I've only achieved doing drc and lvs over

ppolyf_u_1k

.

Based on my understanding, please correct me if I'm mistaken, @Tim Edwards, the selection of this resistor type is based on the BEOL/Metal stack option. I determine this by examining the DRC/LVS files in Klayout, which indicate the following options: The choice is a combination of metal_top, mim_option, and metal_level, with allowed values (A, B, C, D). • Variant A: metal_top=30K, mim_option=A, metal_level=3LM, poly_res=1K, and mim_cap=2. • Variant B: metal_top=11K, mim_option=B, metal_level=4LM, poly_res=1K, and mim_cap=2. • Variant C: metal_top=9K, mim_option=B, metal_level=5LM, poly_res=1K, and mim_cap=2. • Variant D: metal_top=11K, mim_option=B, metal_level=5LM, poly_res=1K, and mim_cap=2. All available options from the open-source tools (A, B, C, and D) use

poly_res=1K

, meaning that's the only HRES Poly Resistor (PHRES) available for use. For Variant D, we are restricted to using only 5 metal layers, with mim_cap option B placed between M4-M5, and our high resistance poly resistor is the ppolyf_u_1k.

That is correct, yes.

Understood, thanks @Gabriel Maranhão.