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#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>
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