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add HMC799 high-speed transimpedance amplifier

Anders Wallin requested to merge github/fork/aewallin/HMC799 into master

Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/hmc799.pdf HMC799LP3E

Possible issues for discussion:

  • In what library should transimpedance amplifiers go? I now placed it in the op-amps library
  • There are three VCC-pins and the datasheet example circuit shows separate decoupling caps for each. I wanted to stick with an op-amp sized symbol, so the VCC pins are stacked.
  • No NC pins are drawn
  • pin name text size reduced to fit within triangle without overlap
  • the only GND-connection is through EP, so I am calling pin25 "GND" (not EP)

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