20261024-2322-key-box-part-count-reduction Key Box 36: part-count reduction (output drivers, analog front end, supplies, ESD arrays)

• status: completed
• priority: P1
• owner: claude/key-box-parts-2322
• createdAt: 2026-10-24 23:22

Description

Owner request 2026-10-24: review the Key Box 36 for chips that cut the part count. Approved items ("可以" / "开始处理"): AD74412R analog front end, ESD capacitor arrays, fixed 10 V regulator, TLE75008-ESD output drivers, 10 W loop-supply module, ALOOP3 / ALOOP4 kept.

Acceptance:

• Schematic and PCB regenerated with the approved changes; ERC 0, DRC with schematic parity 0 errors / 0 unconnected; BOM with manufacturer and MPN on every row.
• Spec, design appendix, README and changelog follow; deviations from the approved estimate are reported to the owner.

ActiveForm

Reducing the Key Box 36 part count

Dependencies

• blocked by: (none)
• blocks: (none)

Notes

• plan: 20261024-2322-key-box-part-count-reduction

• complete: Board installed: DRC 0 unconnected, 0 errors; BOM 357 parts