
2stage tia
aewallin/Photodetector_2stage_OPA818
Measurement data overlaid with TIASim predictions show a parasitic feedback-capacitance of ca 0.15-0.17 pF when no Cf (C126 in shematic) capacitor is installed.
Boards in 6 GitHub repositories, designed in KiCad, that use the OPA657U by Texas Instruments (-40℃~+85℃ -6V~6V 1 1.6GHz 12uV/℃ 14mA 250uV 2pA 4.8nV/√Hz@100kHz 5nA 700V/us 70mA 89dB 8V~12V Decompensated stable、ESD Protection SOIC-8 FET Input Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the OPA657U’s symbol, footprint and pinout are on its own page.

aewallin/Photodetector_2stage_OPA818
Measurement data overlaid with TIASim predictions show a parasitic feedback-capacitance of ca 0.15-0.17 pF when no Cf (C126 in shematic) capacitor is installed.

slactjohnson/l2si-mods-emeter-board
Repository for the L2SI Laser MODS system energy meter diagnostic PCB.


slactjohnson/l2si-mods-quadcell-board
Repository for design files related to the L2SI MODS quad cell PCB.

svenclawdbot-ai/acoustic-research
Multi-frequency shear wave elastography research

jayis1/hardware-design-lab
Full-cycle hardware device designs — each device in its own subfolder with architecture, schematics, PCB layout, and software stack