// SAME Analog Modular Ecosystem
//
#import "../lib/unify.typ": qty

#figure(
  table(
    columns: 4,
    table.header([Layer], [Function], [Copper weight], [Notes]),
    [L1 (top)],
    [Signal + components],
    [$qty(1, "oz")$ ($qty(35, "um")$)],
    [Component side faces right (toward U-channel)],

    [L2 (inner 1)],
    [Ground plane],
    [$qty(1, "oz")$ ($qty(35, "um")$)],
    [Continuous AGND plane, split for DGND if needed],

    [L3 (inner 2)],
    [Power plane],
    [$qty(1, "oz")$ ($qty(35, "um")$)],
    [Split for $plus.minus qty(15, "V")$, $plus.minus qty(5, "V")$ rails],

    [L4 (bottom)],
    [Signal + earth ring],
    [$qty(1, "oz")$ ($qty(35, "um")$)],
    [Faces left wall (mounting side), digital traces if needed],
  ),
  caption: [PCB board stackup],
) <table-pcb-board-stackup>