Spectroscopic performances of a very large area silicon drift detector

Silicon drift detectors (SDD) are known to reach extreme performances in spectroscopy applications but these devices have small active area (few cm 2 at most). We are involved in the development of very-large active area SDDs ( 53 cm 2 ) dedicated to tracking with high position resolution in a very-high particle multiplicity environment. Here we present preliminary experimental results on X-ray spectra measured with front-end electronics optimized for energy resolution.