4 layers65 × 80.8 mm

Boards in 1 GitHub repository, designed in KiCad, that use the OPA347PA by Texas Instruments (-55℃~+125℃ 0.5pA 1 10pA 170V/ms 17mA 2.3V~5.5V 27uA 2mV 350kHz 3uV/℃ 60nV/√Hz@1kHz 70dB Built-in compensation Rail-to-Rail Input, Rail-to-Rail Output PDIP-8 Operational Amplifier ROHS). See how each wires it, with its parts, size, README and files; the OPA347PA’s symbol, footprint and pinout are on its own page.
