summaryrefslogtreecommitdiff
path: root/hw_sim/NOTES.md
AgeCommit message (Collapse)Author
2026-07-18Noise fix quantified (2us window = 3.2x headroom at 1.3x schedule) + JLC ↵Yuren Hao
board costing (MVP -350/5, Stage-1 rig -220/5, T64 boards ~-4k => machine ~-15k) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-18Fix: Sam Dillavou is one person (UPenn), not two collaboratorsYuren Hao
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-18Fab strategy: JLC SMT + socketed screened MDACs + DFT layout + first-article ↵Yuren Hao
5; SKiDL->KiCad->Gerber/BOM/CPL scripted order package Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-17Energy ledger: SPICE core 2.87pJ/MAC; boards lose ~1000x (trainability ↵Yuren Hao
demos); coherent integrated projection 0.21-0.63 pJ/MAC = parity-to-5x vs digital, ADC-dominated — honest range, not CIM marketing Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-17Stage C: SPICE-in-the-loop training — SPICE == behavioral == ideal ↵Yuren Hao
(0.0213/0.0213/0.0211, all 100% acc); fidelity ladder certified; 7200 ngspice solves in 26s Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-17hw_sim v1.1: ENOB-after-cal 8.51b (clears 7.0 bar; per-bit mismatch model) + ↵Yuren Hao
noise budget 138.7uV vs 100uV floor = MARGINAL -> hardware wall-1 quantified, wants big nudges Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-17hw_sim: bus-settle fix menu parked as Dillavou session question (incl user's ↵Yuren Hao
precharge-rotation idea) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
2026-07-17hw_sim v1: datasheet-anchored column — C_bus=5.4nF kills naive design ↵Yuren Hao
(16.6us); best comp point 3.14us borderline vs 3us commit gate; offset rejection x3088; three design options logged Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-18 21:35:48 +0000