2-channel phantom-powered mic preamp (KiCad, INA163)
Two-channel microphone preamp built around the TI INA163, in KiCad 10: schematic plus a 2-layer 100 x 78 mm PCB.
- Per channel: XLR input, switchable +48 V phantom feed through 6.80 kohm 0.1 % resistors, bipolar DC-blocking capacitors, BAV99 input clamps and 0.1 % bias resistors, following figure 5 of the INA163 datasheet
- Audio signal path routed by hand; only power, phantom feed and ground were autorouted
- ERC/DRC reports, fabrication outputs and renders included; the whole design is regenerated from scripts
This is a portfolio project, not client work, and has not been built.