Publications de Evgenia Voulgari

ANTIGONE: A Programmable Energy-Efficient Current Digitizer for an ISFET Wearable Sweat Sensing System

Maher Kayal, François Krummenacher, Evgenia Voulgari

This article describes the design and the characterization of the ANTIGONE (ANalog To dIGital cONvErter) ASIC (Application Specific Integrated Circuit) built in AMS 0.35 m technology for low dc-current sensing. This energy-efficient ASIC was specifically d ...

2021

Design of an Energy-Efficient Current-to-Frequency Converter for a Wearable Sensor Platform

Maher Kayal, François Krummenacher, Evgenia Voulgari

This paper presents the design of the ANTIGONE ASIC in AMS 0.35 mu m technology that interfaces with ion-sensitive field effect transistors (ISFETs) to detect biomarkers like pH, Na+ and K+ in human sweat. The ISFET sensors generate a low current dc signal ...

IEEE2019

A programmable low-power ADC interface for an ISFET sweat sensor used in a wearable multi-sensing system

Maher Kayal, François Krummenacher, Evgenia Voulgari

An application specific integrated circuit (ASIC) named ANTIGONE (ANalog To dIGital cONvErter) was designed in AMS 0.35 mu m technology to interface with four Ion-sensitive field-effect transistor (ISFET) sensors and perform real-time monitoring of some bi ...

IEEE2019

Utopia: A Nine Decade Femtoampere Sensitivity Current Digitizer and its Application in Ionizing Radiation Monitoring

Maher Kayal, François Krummenacher, Evgenia Voulgari

2018

Design of a fA wide dynamic range ADC for current sensing (pg 1, 2018)

Maher Kayal, François Krummenacher, Evgenia Voulgari

2018

Characterization of a 9-Decade Femtoampere ASIC Front-End for Radiation Monitoring

Maher Kayal, François Krummenacher, Daniel Perrin, Evgenia Voulgari

An ultra-low current sensing digitizer circuit was designed for radiation monitoring for personnel and environmental safety at CERN. The Ultralow Picoammeter 2 (Utopia 2) ASIC includes some key functionalities like on-chip active leakage current compensati ...

2018

Design of a fA wide dynamic range ADC for current sensing

Maher Kayal, François Krummenacher, Evgenia Voulgari

2018

A Nine Decade Femtoampere Current to Frequency Converter

Evgenia Voulgari

Various applications require ultra-low current sensing. Some of these applications are related to ionizing radiation detection. Radiation monitoring is important in particle physics experiments, nuclear facilities, hadron therapy institutes and hospitals. ...

EPFL2017

A 9-decade current to frequency converter with active leakage compensation

Maher Kayal, François Krummenacher, Daniel Perrin, Evgenia Voulgari

2017

A front-end ASIC for ionising radiation monitoring with femto-amp capabilities

François Krummenacher, Daniel Perrin, Evgenia Voulgari

An ultra-low leakage current Application Specific Integrated Circuit (ASIC) called Utopia (Ultralow Picoammeter) has been designed and fabricated in AMS 0.35 mu m CMOS, in order to be used as the front-end for ionising radiation monitoring at CERN. It is b ...

Iop Publishing Ltd2016

Design and Measurement Methodology for a Sub-picoampere Current Digitiser

Maher Kayal, François Krummenacher, Evgenia Voulgari

This paper introduces some design and measurement techniques that were used in the design and the testing of an ASIC for ultra-low current sensing. The idea behind this paper is to present the limitations in sub-picoampere current measurements and demonstr ...

Ieee2015