Boards in 2 GitHub repositories, designed in KiCad, that use the OPA4187ID by Texas Instruments (-18V~-2.25V、2.25V~18V -40℃~+125℃ 0.2V/us 100pA 100pA 100uA 140dB 1nV/℃ 1uV 20nV/√Hz@1kHz 30mA 4.5V~36V 550kHz EMI filtering/RF suppression、Zero drift / auto-zero、Reverse-phase input protection Four channels Rail-to-rail output SOIC-14 Precision Op Amps ROHS). See how each wires it, with its parts, size, README and files; the OPA4187ID’s symbol, footprint and pinout are on its own page.
gastelumosiel/active-6-band-audio-equalizer-pcb
Design, fabrication, and manufacturability analysis of a 4-layer PCB for a 6-band active audio equalizer using Sallen-Key filters and OPA4134 op-amps.
gastelumosiel/active-6-band-audio-equalizer-pcb
Design, fabrication, and manufacturability analysis of a 4-layer PCB for a 6-band active audio equalizer using Sallen-Key filters and OPA4134 op-amps.
tombueng/hilprobe
HILprobe: multi-function UUT probe for hardware-in-the-loop testing - RS-485, CAN FD, logic analyzer, 4-ch scope, two programmable UUT supplies. KiCad 10, 6 layers, RP2350B + ESP32-S3.