Boards in 1 GitHub repository, designed in KiCad, that use the LF347N by Texas Instruments (-18V~-3.5V、3.5V~18V 0℃~+70℃ 100dB 13V/us 18nV/√Hz@1kHz 18uV/℃ 25pA 3MHz 50pA 5mV 8mA Short-Circuit Protection DIP-14 FET Input Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the LF347N’s symbol, footprint and pinout are on its own page.
gvillanovanm/msc-sohard-pvs
SOHARD-PVS is a platform that allows for easy testing of pacemaker models. It focuses on both the software behavior and electrical circuits of the pacemaker, and the electrical heart characteristics.