We are very pleased to present to the readers of the Springer Journal on Analog Integrated Circuits and Signal Processing (ALOG) a selection of extended papers from the 6th edition of the IEEE Latin America Symposium on Circuits and Systems (LASCAS 2015). The symposium, a forum for discussion of the latest technical novelties on circuits and systems topics, took place in Montevideo—Uruguay, organized by the local IEEE-CAS chapter. LASCAS is an annual meeting that brings together researchers, industry, engineers, students interested in circuits and systems across a wide spectrum of scientific and technological fields: VLSI, analog and digital signal processing, biomedical circuits and systems, multimedia systems, nanoelectronics, neural networks, communications circuits, CAD, power electronic circuits, sensors, among others. The conference is a great opportunity for colleagues operating in very different areas of industrial, scientific, and technological endeavor to come together and create the basis for renewed collaboration.

In 2015, more than 180 people attended LASCAS including university students and academics, researchers, and engineers from the industry, from 26 countries and 3 continents. 160 papers were submitted to the conference. After a thorough review process 93 papers were accepted for presentation at the conference and publication in the IEEE LASCAS Proceedings, making up a high-quality technical program covering a wide variety of subjects in the field of circuits and systems. Based on the evaluations of the Program Committee members and the corresponding session chairs, a total of 20 of these works were invited to submit a substantially extended and revised manuscript to this Special Issue of LASCAS 2015. These papers went through a second-round of peer-review process and 12 papers were finally selected for this Special Issue.

In the analog circuit design domain, the papers deal with voltage references: A Computer-Aided Approach for Voltage Reference Circuit Design, by Fabian Olivera et al., micropower circuits: Low-Power Operational Transconductance Amplifier with Slew-Rate Enhancement Based on Non-Linear Current Mirror, by Pablo Pérez Nicoli et al., and Step Down DC/DC converter for Micro-Power Medical Applications, by Matias Miguez et al., biomedical circuits: High Stability Voltage Controlled Current Source for Cervical Cancer Detection using Electrical Impedance Spectroscopy, by José A. Amaya Palacio et al., or sensor circuits: Front-end for gaseous detectors read-out with improved PSRR in 130 nm CMOS technology by Hugo Hernández et al. Three papers address topics on RF and communication circuits: A charge transfer-based high performance, ultra-low power CMOS charge pump for PLLs, by Susan M. Schober et al., Design Optimization of a CMOS RF Detector, by Nicolás Barabino et al., and A CMOS Low Noise Transconductance Amplifier for 1–6 GHz Bands, by David Cordova et al. One paper analyzes techniques for AD converters: Design methodology for low-jitter differential clock recovery circuits in high performance ADCs, by Juan Nuñez et al., while device modeling with analog application is considered in A Compact Model for Flicker Noise in MOSFETs considering both correlated mobility and carrier number fluctuations, by Alfredo Arnaud et al. Neural Networks are examined in Implementing Delay Insensitive Oscillatory Neural Networks using CMOS and Emerging Technology, by Thomas Christopher Jackson, and network-on-chip (NoC) circuits in A New Local Clock Generator for Globally Asynchronous Locally Synchronous MPSoCs by Guilherme Heck et al.

We deeply thank the authors that prepared the extended papers for this Special Issue, and the reviewers for their contribution to the creation of the LASCAS 2015 technical program and for their involvement in the revision of the selected papers for this Special Issue. We thank the session chairs who not only contributed to the successful development of the symposium, but also helped in the selection of the best papers for journal publication. Finally we would like to express our appreciation to Dr. Mohammed Ismail, Editor-in-chief of the Journal, for the opportunity to organize this Special Issue, and to the assistance of Raja Chinnadurai and Ayshwarya Ganesan, from the Springer Journal Editorial Office, for their diligent work and help. We hope you appreciate this Special Issue.