Program >> Alfredo Olmos (CEITEC)


Speaker
Alfredo Olmos (CEITEC)

Title
Low power voltage and current references, relaxation oscillators, and temperature sensors

Abstract
Robust low-power voltage and current references are crucial to properly bias analog circuits with a well-defined, very stable signal over process, temperature, and power supply variations. Nowadays, low-power low-voltage features are also strongly attractive for analog bias modules in portable applications. Besides those IPs, the current trend in the semiconductor market demands for System-on-Chip (SoC) devices including on-chip oscillators and temperature sensors capable of working at low voltage levels over a wide temperature range, dissipating very low power and occupying a reduced area. Furthermore, efficiency, simplicity, easy-to-design analog circuit structures compatible with VLSI technologies are highly desirable. The design of a novel all-MOS low-power bandgap reference in an open loop topology and a sub-1V resistorless current reference are presented, as well as a low power relaxation oscillator and a temperature sensor.

SHORT CVs
Alfredo Olmos was born in Cali, Colombia, in 1963, and graduated in Electrical Engineering from Valle University, Colombia, in 1989. During 1988-1990 he worked as a design engineer at the Microelectronics Laboratory of the Valle University. In 1993 he received the MSEE degree (with honors) from the University of São Paulo, Brazil. From 1995 to 1996 he was at Fujitsu Laboratories, Japan, where he developed a 4GSps Sigma Delta Modulator using HEMT devices. In 1998 he received his PhD degree from the University of São Paulo. From beginning of 1998 to middle of 1999 he was Assistant Professor at the Industrial University of Santander, Colombia. From 1999 to 2012 he was working joint to the Analog IP Design team of Freescale Semiconductor Inc. Nowadays, he is acting as Design Manager at Ceitec Semiconductors S. A. Dr. Olmos holds 19 US patents, 20 US patent applications, 2 WIPO patent applications, and has written more than 30 technical articles as well as several application notes.