Hello, I am designing a bandgap on gf180, however, I wanted a smaller TC, so I used the topology that includes an opam, however, I have made several adjustments and I can't see the curvature, does anyone know what this could be? (the opam has a gain of 52db)

Hi how re u? Im triying to port the SAR ADC form this pdf https://epub.jku.at/obvulihs/content/titleinfo/8694768 and i have a problem with de the preamplifier, the thesis uses SKY130, and im trying to do in gf180, so i tried to keep some ratios between the width form the mosfet. My question is: -How to improve the preamp´s gain? cascaded preamp? -why when a transistor gets polarized (i think its actually cutoff) it makes the another out´s capacitor gets discharged faster?

Hi all. I wanted to ask that is there a way in openlane to add a vcd file of design to estimate power. Thanks

I can't figure out how to import the netlist, and also how to integrate it with the caravel project

I had two problems while processing global placement of RePlAce. When I ran the global placement(GP) with the benchmark of ISPD 2015 contest, there were two benchmarks that could not process the GP stage smoothly. ( mgc_superblue16_a and mgc_superblue19 ) *benchmark of ISPD 2015 : https://www.ispd.cc/contests/15/web/downloads.html (Hidden benchmark designs ) I processed the following commands in my tcl file: read_lef {tech.lef} read_lef ${cells.lef} read_def ${floorplan.def} global_placement -density 1.0 After I processed benchmark of mgc_superblue19, the last 2 rows of error messages are: [NesterovSolve] Iter: 680 overflow: 0.18357 HPWL: 14598922301 [ERROR GPL-0307] RePlAce divergence detected. Re-run with a smaller max_phi_cof value. When I try smaller max_phi_cof value ( 1.1,1.3) with following command: global_placement -density 1.0 -max_phi_coef 1.03 There still had error message: [NesterovSolve] Iter: 680 overflow: 0.18357 HPWL: 14598922301 [ERROR GPL-0307] RePlAce divergence detected. Re-run with a smaller max_phi_cof value. And I further try smaller max_phi_cof global_placement -density 1.0 -max_phi_coef 1.01 The error will be solved, but the overflow will not decrease less than 0.1 after 5000 iterations of NesterovSolve. The last 2 rows of messages are: [NesterovSolve] Iter: 4990 overflow: 0.362241 HPWL: 12902711426 [NesterovSolve] Iter: 5000 overflow: 0.362278 HPWL: 12902395788 Another problem is that after I processing mgc_superblue16_a, the error message showed that : [ERROR GPL-0305] RePlAce diverged at newStepLength. But I have no idea how to solve this problem. Please help me, thanks!

like between floorplanning and placement

@SUMANTO KAR @Tim Edwards magic and netgen are ok. Only xchem is left to be straightened out.

@Talha Bin Azmat how have you done the installtion of xyce ? I have difficulty in installing Trilinos. Any help?

Hi, https://github.com/efabless/sky130_sram_macros, for srams in this github, what is the access latency when reading the sram?

Hello Everyone, For the deliverable of the precheck results for a moc design on August 25th, is that the local precheck? Or the efabless website one? Or does it not matter in this case? Thanks a lot!