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Microphone board
Microphone board with an SPH0644LM4H-1 PDM microphone. The board break-routes PDM signals from the microphone to a zero insertion force connector. Additionally, the board provides voltage filtering and ESD protection.
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KiCad Project (zip) 0.27 MB
Schematic PDF 0.18 MB
STEP model 0.84 MB
Knowles SPH0644LM4H-1
Zero insertion force connector for a 5 pin, 0.5 mm pitch FFC
Selectable Left or Right channel audio transmitting
Alignment cutouts for toolless mounting
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Name | Type | Material | Thickness[mm] | Constant |
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F.Mask | Top Solder Mask | 0.01 | ||
F.Cu | copper | 0.035 | ||
dielectric 1 | prepreg | FR4 | 0.12 | 4.5 |
In1.Cu | copper | 0.035 | ||
dielectric 2 | core | FR4 | 1.2 | 4.5 |
In2.Cu | copper | 0.035 | ||
dielectric 3 | prepreg | FR4 | 0.12 | 4.5 |
B.Cu | copper | 0.035 | ||
B.Mask | Bottom Solder Mask | 0.01 |
Scale [mm]
0 10
Microphone board