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Add LOG114 logarithmic amplifier

Uli Köhler requested to merge ulikoehler/kicad-symbols:LOG114 into master

https://www.ti.com/lit/ds/symlink/log114.pdf

IMO it is important to show the internal connections as well as the pin names, because these amplifiers can be complex to use and you might need to look up what V_{LOGOUT} does in the datasheet.

Layout inspired by reference schematic, but COM pin to the left as it sometimes needs to be connected to VREF (depending on the supply configuration etc)

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Edited by Uli Köhler

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