  The high-luminosity phase of the Large Hadron Collider will provide 5-7 times
greater luminosities than assumed in the original detector design. An improved
trigger system requires an upgrade of the readout electronics of the ATLAS
Liquid Argon Calorimeter. Concepts for the future readout of the 182,500
calorimeter cells at 40-80 MHz and 16-bit dynamic range and the developments of
radiation-tolerant, low-noise, low-power, and high-bandwidth front-end
electronic components, including preamplifiers and shapers, 14-bit ADCs, and
10-Gb/s laser diode array drivers, are presented in this paper.
