The complete readout system for THz spectroscopy

Abstract

This paper deals with design of readout system, and then its monolithic implementation, intended for spectroscopy in THz range. At the beginning, the fundamentals of THz spectroscopy based on selective NMOS pixel line, and its possible applications for materials identification are presented. Next, the preceding work on single-channel readout circuit is shortly recalled, with a special emphasis on the last design version featuring selective chopper amplifier. This IC became the basis of the complete readout system addressed in next few sections of this paper. Finally, design of novel integrated circuit is presented, incorporating the multi-channel readout circuit dedicated for pixel line.