The aim of this thesis is to present a solution for the analogue signal processing chain to be used in the LHCb calorimeter upgrade to substitute the present electronics and adapt to the new detector conditions. An integrated circuit was designed and tested which offers a performance that fulfills the noise and shaping requirements. It includes four analog channels, a Delay Locked Loop (DLL) for signal phase synchronization for all channels and an SPI communication protocol based interface. The analog circuit is based on two fully differential interleaved channels with a switched integrator to avoid dead time and it incorporates dedicated solutions to achieve low noise, linearity and spill-over specifications. The included DLL is capable of shifting the phase of the LHC clock (25 ns) in steps of 1ns. The selected technology is AMS SiGe BiCMOS 0.35µm. Detailed testing procedures were applied to check if the integrated circuit meets the specifications. Further evaluations include tests with electron beams for real detector signal. Even more, the design included radiation hardness techniques and studies were done of its reliability under a radiation environment. The production and massive quality control guidelines are proposed.