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PCBs designed using KiCad: https://www.kicad.org/ # Format documentation: https://kicad.org/help/file-formats/ # Temporary files *.000 *.bak *.bck *.kicad_pcb-bak *.kicad_sch-bak *.kicad_prl *.kicad_pro *.rules *.sch-bak *~ _autosave-* *.tmp *-save.pro *-save.kicad_pcb fp-info-cache # Autorouter files (exported from Pcbnew # Exported BOM files *.xml *.csv # KiCad backups folders *-backups # Compressed files *.zip # Mac stuff *.DS_Store # Emacs temps *~ \#* # LTSpice Simulations/*.log Simulations/*.raw Simulations/*.txt Copper Layer Stackup: T5 15.200mm 0.5984" (1 hole T3 7.000mm 0.2756" (6 holes) T4 10.000mm 0.3937" (4 holes) (with 4 slots) T2 5.000mm 0.1969" (1 hole T3 7.000mm 0.2756" (6 holes) T4 10.000mm 0.3937" (4 holes) (with 4 slots) T2 5.000mm 0.1969" (1 hole Total plated holes count 16 Not plated through holes: ============================================================= T1 3.200mm 0.1260" (4 holes) (with 4 slots) T2 5.000mm 0.1969" (1 hole) Total plated holes unplated through holes: ============================================================= T1 3.200mm 0.1260" (4 holes) T5 15.200mm 0.5984" (1 hole T3 7.000mm 0.2756" (6 holes) T4 10.000mm 0.3937" (4 holes T5 15.200mm 0.5984" (1 hole Total plated holes count 16 Not plated through holes are merged with plated holes count 16 Not plated through holes: merged pull request 'new_footprints' (#5) from new_footprints into main Reviewed-on: https://gitea.circuitlocution.com/synth_mages/MK_VCO/pulls/4 Merge pull request synth_mages/MK_SEQ#1 2666d5803f Footprint selection, some PCB layout choices 4d8e233e93 Add CV in implement a DC offset via non-inverting op-amp. A CV in to pause the clock oscillilator an external module, with the complete agreement concerning the subject matter hereof. If any portion of it, thus forming a work based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera BGA-153 M153 MBGA Altera UBGA U169 BGA-169 BGA-200, 14.5x10.0mm, 200 Ball, 12x22 Layout, 0.8x0.65mm Pitch, http://www.issi.com/WW/pdf/43-46LQ32256A-AL.pdf Altera BGA-256 M256 MBGA BGA-256, dimensions: https://www.xilinx.com/support/documentation/package_specs/ft256.pdf, design rules: https://www.xilinx.com/support/documentation/user_guides/ug1099-bga-device-design-rules.pdf Altera UBGA U169 BGA-169 BGA-200, 14.5x10.0mm, 200 Ball, 12x22 Layout, 0.8x0.65mm Pitch, http://www.issi.com/WW/pdf/43-46LQ32256A-AL.pdf Altera BGA-256 M256 MBGA BGA-256, dimensions: https://www.xilinx.com/support/documentation/package_specs/ft256.pdf, design rules: https://www.xilinx.com/support/documentation/user_guides/ug1099-bga-device-design-rules.pdf Altera UBGA U324 BGA-324 BGA-624, 25x25 grid, 21x21mm package, pitch 0.5mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00213872.pdf WLCSP-64, 8x8 raster, 3.623x3.651mm package, pitch 0.4mm; https://www.latticesemi.com/view_document?document_id=213 UCBGA-49, 7x7 raster, 3.141x3.127mm package, pitch 0.4mm; see section 7.1 of http://www.st.com/resource/en/datasheet/DM00213872.pdf WLCSP-64, 8x8 raster, 4.539x4.911mm package, pitch 0.4mm; see section 48.2.4 of http://ww1.microchip.com/downloads/en/DeviceDoc/DS60001479B.pdf WLCSP-81, 9x9, 0.4mm Pitch, https://pdfserv.maximintegrated.com/package_dwgs/21-100168.PDF XBGA-121, 11x11 raster, 10x10mm package, pitch 0.4mm; see section 6.3 of http://www.st.com/resource/en/datasheet/stm32f469ni.pdf WLCSP-180, 13x14 raster, 5.537x6.095mm package, pitch 0.5mm; see section 7.4 of http://www.st.com/resource/en/datasheet/stm32l052t8.pdf WLCSP-36, 6x6 raster, 2.605x2.703mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32f031k6.pdf WLCSP-25, 5x5 raster, 2.097x2.493mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32f031k6.pdf WLCSP-25, 5x5 raster, 2.133x2.070mm package, pitch 0.8mm.

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