metronome/hardware/eda/circuits
Me Here 075c1786af PM_K-1 hardware: verify THAT1240 against datasheet; fix pinout + part numbers
Verified the receiver from THAT doc 600035 rev05 instead of guessing:
- THAT1240 = 0 dB (unity) -- correct as specced; 1243=-3dB, 1246=-6dB would be wrong.
- SO-8 pinout 1=Ref 2=In- 3=In+ 4=Vee 5=Sense 6=Vout 7=Vcc 8=NC. My initial
  SKiDL pins were mostly wrong; corrected. Netlist now matches the datasheet.
- KiCad Device:D is pin1=K/pin2=A; my clamp diodes were reversed -- fixed so they
  actually clamp (D high->cathode to +15, D low->anode to -15).
- BOM part numbers had a bogus "W16" suffix; corrected to S08-U (SO-8). Noted
  INA134/SSM2141 as pin-compatible 2nd sources for long-term availability.

ERC 0 errors, netlist 0 errors.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-05-30 19:48:41 -05:00
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stage1_input.py PM_K-1 hardware: verify THAT1240 against datasheet; fix pinout + part numbers 2026-05-30 19:48:41 -05:00