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Christian Enz

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Related publications (213)

Page 7 of 11

Recent trends in low-frequency noise reduction techniques for integrated circuits

Christian Enz, Assim Boukhayma

This paper presents the two main circuit techniques, namely autozeroing (AZ) and chopper stabilization (CS), that are used to reduce the 1/f noise and offset in amplifiers typically used in sensor electronics interfaces. After recalling their main properti ...

2015

Characterization and Modeling of Gigarad-TID-Induced Drain Leakage Current of 28-nm Bulk MOSFETs

Christian Enz, Farzan Jazaeri, Chunmin Zhang

This paper characterizes and models the effects of total ionizing dose (TID) up to 1 Grad(SiO2) on the drain leakage current of nMOSFETs fabricated with a commercial 28-nm bulk CMOS process. Experimental comparisons among individual nMOSFETs of various siz ...

2018

Negative Capacitance Field Effect Transistors; Capacitance Matching and non-Hysteretic Operation

Mihai Adrian Ionescu, Christian Enz, Farzan Jazaeri, Igor Stolichnov, Ali Saeidi, Francesco Bellando

This work experimentally demonstrates negative capacitance MOSFETs in hysteretic and non-hysteretic modes of operation. A PZT capacitor is externally connected to the gate of commercial nMOSFETs fabricated in 28nm CMOS technology to explore the negative ca ...

IEEE2017

FOSS EKV2.6 Verilog-A Compact MOSFET Model

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

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

Simple Expression of the Thermal Noise Excess Factor for LNA Design

Christian Enz

This paper proposes a simple model of the thermal noise excess factor in saturation gamma(nsat) for short-channel transistors affected by velocity saturation. It is shown that gamma(nsat) in strong inversion and saturation under velocity saturation increas ...

IEEE2022

Survey of Precision-Scalable Multiply-Accumulate Units for Neural-Network Processing

Christian Enz, Vincent Frédéric Camus

The current trend for deep learning has come with an enormous computational need for billions of Multiply-Accumulate (MAC) operations per inference. Fortunately, reduced precision has demonstrated large benefits with low impact on accuracy, paving the way ...

IEEE2019

EMG Pattern Recognition Using Decomposition Techniques for Constructing Multiclass Classifiers

Christian Enz, Claudio Bruschini, Huaiqi Huang, Jörn Justiz

To improve the dexterity of multi-functional myoelectric prosthetic hand, more accurate hand gesture recognition based on surface electromyographic (sEMG) signal is needed. This paper evaluates two types of time-domain EMG features, one independent feature ...

IEEE2016

A Multiband Concurrent Sampling based RF Front End for Biotelemetry Applications

Christian Enz, Aravind Prasad Heragu Singaiyengar

A sub-sampling based multiband RF front end suitable for medical telemetry applications is presented. Using a single inductor and a single sampling frequency it is shown how to downconvert concurrently Bluetooth LE and MICS band signals to baseband with re ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Total Ionizing Dose Effects on Analog Performance of 28 nm Bulk MOSFETs

Christian Enz, Claudio Bruschini, Farzan Jazaeri, Chunmin Zhang, Alessandro Pezzotta

This paper uses the simplified charge-based EKV MOSFET model for studying the effects of total ionizing dose (TID) on analog parameters and figures-of-merit (FoMs) of 28nm bulk MOSFETs. These effects are demonstrated to be fully captured by the five key pa ...

2017

An Accurate kTC Noise Analysis of CDS Circuits

Christian Enz, Assim Boukhayma, Antonino Caizzone

This work presents an analytical analysis of the thermal noise in widely used correlated double-sampling (CDS) circuits. The objective is to provide designers with simplified noise formulas essential for the design and optimization of such blocks. The obta ...

IEEE2018

Design optimization for low light CMOS image sensors readout chain

Christian Enz, Assim Boukhayma

Email Print Request Permissions For a CIS readout chain based on 4T pixel, column amplification and CDS, we confirm that thermal noise can be reduced to be neglected compared to 1/f noise using parameters independent of the pixel design, namely column leve ...

2014

Multi-modal Sensory Feedback System for Upper Limb Amputees

Christian Enz, Jörn Justiz, Huaiqi Huang

Providing sensory feedback for myoelectric prosthetic users can not only increase the manipulation ability but can also introduce a feeling of embodiment. Previous research has demonstrated the feasibility of providing mechanotactile or vibrotactile feedba ...

2017

Review and Benchmarking of Precision-Scalable Multiply-Accumulate Unit Architectures for Embedded Neural-Network Processing

Christian Enz, Vincent Frédéric Camus

2019

Characterization and Modeling of 28-nm FDSOI CMOS Technology down to Cryogenic Temperatures

Christian Enz, Arnout Lodewijk M Beckers, Farzan Jazaeri

This paper presents an extensive characterization and modeling of a commercial 28-nm FDSOI CMOS process operating down to cryogenic temperatures. The important cryogenic phenomena influencing this technology are discussed. The low-temperature transfer char ...

2018

A 49 mu W 6th-Order Chebyshev SSF-based Low-Pass Analog Filter for IEEE 802.11ax

Christian Enz, Alessandro Pezzotta, Daniel Mathias Bold

In this paper a continuous-time low-pass analog filter based on the Cascoded Super Source Follower (C-SSF) architecture, implemented in a 28-nm bulk CMOS process, is presented. The target application is the transceiver analog baseband for the next-generati ...

IEEE2020

Cryogenic Characterization of 28 nm Bulk CMOS Technology for Quantum Computing

Christian Enz, Claudio Bruschini, Arnout Lodewijk M Beckers, Farzan Jazaeri, Andrea Ruffino

This paper presents the first experimental investigation and physical discussion of the cryogenic behavior of a commercial 28 nm bulk CMOS technology. Here we extract the fundamental physical parameters of this technology at 300,77 and 4.2 K based on DC me ...

2017

Nanoscale MOSFET Modeling for the Design of Low-power Analog and RF Circuits

Christian Enz, Alessandro Pezzotta

This paper presents the simplified charge-based EKV MOSFET model and shows that it can be used for advanced CMOS processes despite its very few parameters. The concept of inversion coefficient is then presented as an essential design parameter that spans t ...

IEEE2016

Analytical Modeling of Source-to-Drain Tunneling Current Down to Cryogenic Temperatures

Christian Enz, Hung-Chi Han

The subthreshold swing (SS) of MOSFETs decreases with temperature and then saturates below a critical temperature. Hopping conduction via the band tail has been proposed as the possible cause for the SS saturation. On the other hand, numerical simulations ...

Institute of Electrical and Electronics Engineers2023

Automatic Generation of Inexact Digital Circuits by Gate-level Pruning

Christian Enz, Vincent Frédéric Camus, Jérémy Lucien Maurice Schlachter

Inexact or approximate circuits show great ability to reduce power consumption at the cost of occasional errors in comparison to their conventional counterparts. Even though the benefits of such circuits have been proven for many applications, they are not ...

2015

Role of the gate in ballistic nanowire SOI MOSFETs

Christian Enz, Jean-Michel Sallese, Anurag Mangla

In this paper we report the results of Monte-Carlo simulations performed on double-gate ballistic MOSFETs with a geometry such that the gates overlap only a fraction of the channel. We present a qualitative analysis of the simulation results highlighting t ...

Elsevier2015