Table of Contents
VLSI Design
Volume 2007, Article ID 71684, 12 pages
Research Article

Advanced Readout System IC Current Mode Semi-Gaussian Shapers Using CCIIs and OTAs

Section of Electronics and Computers, Electronics Laboratory, Physics Department, Aristotle University of Thessaloniki, Aristotle University Campus, Thessaloniki 54124, Greece

Received 4 November 2006; Accepted 3 February 2007

Academic Editor: Adoracion Rueda

Copyright © 2007 Thomas Noulis et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Novel CMOS current mode shapers for front-end electronics are proposed. In particular, six semi-Gaussian shaper implementations based on second generation current conveyors and operational transconductance amplifiers are designed using advanced filter design techniques. Although all shaper architectures are fully integrated, they satisfy a relatively large peaking time. The topologies are analytically compared in terms of noise performance, power consumption, total harmonic distortion (THD), and dynamic range (DR) in order to examine which is the most preferable in readout applications. Design technique selection criteria are proposed in relation to the shaper structures performance. Analysis is supported by simulations results using SPICE in a 0.6 μm process by Austria Mikro Systeme (AMS).