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+ MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on EPCOS app note at http://www.cypress.com/file/140006/download DFN, 6 Pin (https://www.silabs.com/documents/public/data-sheets/si512-13.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-118-02-xxx-DV-A, 18 Pins per row, Mounting: (http://www.molex.com/pdm_docs/sd/039281043_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOP, 4 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=12884&prodName=TLP291), generated with kicad-footprint-generator Hirose DF11 through hole, DF11-14DP-2DSA, 7 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-127-02-xxx-DV-BE-LC, 27 Pins per row (http://www.molex.com/pdm_docs/sd/439151404_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 7, Wuerth electronics 9774010943 (https://katalog.we-online.de/em/datasheet/9774010943.pdf), generated with kicad-footprint-generator JST PUD top entry JST VH PBT series connector, S5B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator JST SH series connector, SM02B-SFHRS-TF (http://www.jst-mfg.com/product/pdf/eng/eSFH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 2.5, Wuerth electronics 9774050243 (https://katalog.we-online.de/em/datasheet/9774050243.pdf), generated with kicad-footprint-generator connector JST SHL series connector, 501331-0207 (http://www.molex.com/pdm_docs/sd/5013310207_sd.pdf), generated with kicad-footprint-generator Molex Sabre side entry Molex Panelmate series connector, B02P-NV (http://www.jst-mfg.com/product/pdf/eng/eNV.pdf), generated with kicad-footprint-generator JST SUR series connector, 502382-0570 (http://www.molex.com/pdm_docs/sd/5023820270_sd.pdf), generated with kicad-footprint-generator JST EH series connector, 53398-0471 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py EQFP, 144 Pin (https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/packaging/04r00482-02.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py WSON, 8 Pin (https://www.ti.com/lit/ds/symlink/lp2987.pdf#page=26), generated with kicad-footprint-generator Hirose series connector, B6P-VH (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py LQFP, 144 Pin (http://ww1.microchip.com/downloads/en/PackagingSpec/00000049BQ.pdf#page=425), generated.

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