# AMSchem-Bench

Much analog and mixed-signal design knowledge lives in schematics, while a netlist records devices and connections but not how a person reads them. AMSchem separates a circuit-aware plan of what to draw from executable schematic geometry, and every revision must pass deterministic checks for device preservation, pin-net consistency and geometric legality. On the 40-circuit schematic subset of AMSchem-Bench, AMSchem with gpt-5.5 reaches 85.0% validity against 32.5% for direct generation; used as a visual feedback module in an LLM analog design loop, it resolves all 13 previously failed AnalogCoder cases across five models.

Much analog and mixed-signal design knowledge lives in schematics, while a netlist records devices and connections but not how a person reads them. AMSchem separates a circuit-aware plan of what to draw from executable schematic geometry, and every revision must pass deterministic checks for device preservation, pin-net consistency and geometric legality. On the 40-circuit schematic subset of AMSchem-Bench, AMSchem with gpt-5.5 reaches 85.0% validity against 32.5% for direct generation; used as a visual feedback module in an LLM analog design loop, it resolves all 13 previously failed AnalogCoder cases across five models.