Publications de François Krummenacher

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

Maher Kayal, Evgenia Voulgari, François Krummenacher

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

FOSS EKV2.6 Verilog-A Compact MOSFET Model

Christian Enz, Jean-Michel Sallese, Wladyslaw Grabinski, Eric Vittoz, François Krummenacher, Matthias Bucher, Christophe Lallement

The EKV2.6 MOSFET compact model has had a considerable impact on the academic and industrial community of analog integrated circuit design, since its inception in 1996. The model is available as a free open-source software (FOSS) tool coded in Verilog-A. T ...

IEEE2019

A high sensitivity low-power capacitive front-end for insulin injection pens

Maher Kayal, François Krummenacher, Jean-Baptiste Robert Orhan, François Pierre Gaugaz

A low-power 14-bits first order incremental Analog-to-Digital Converter (ADC) is presented. Based on the charge balancing principle, this switched-capacitor (SC) circuit integrates the input signal multiple times to reach the targeted resolution, linearity ...

ELSEVIER SCI LTD2019

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

Maher Kayal, Evgenia Voulgari, François Krummenacher

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, Evgenia Voulgari, François Krummenacher

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

A Fully Integrated 60 mV Cold-Start Circuit for Single Coil DC-DC Boost Converter for Thermoelectric Energy Harvesting

Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans

Harvesting energy from ambient energy sources, such as thermal gradients is one solution to address the dramatic increase in energy consumption of personal electronics. While in the field, energy abundantly available in form of heat. The use of primary cel ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

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

Maher Kayal, Evgenia Voulgari, François Krummenacher, Daniel Perrin

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

Switched-capacitor high-speed emulator for real-time fault location in electrical power systems

Maher Kayal, François Krummenacher, François Pierre Gaugaz

This research presents a discrete-time transmission line model based on the propagation of travelling waves. In this approach, the transmission line is emulated by means of many interconnected unit delay cells implemented with switched-capacitor (SC) circu ...

SPRINGER2018

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

Maher Kayal, Evgenia Voulgari, François Krummenacher

2018

Design of a fA wide dynamic range ADC for current sensing

Maher Kayal, Evgenia Voulgari, François Krummenacher

2018