Publications de Seyed Armin Tajalli

ISI Sensitivity of PAM Signaling for Very High-Speed Short-Reach Copper Links

Yusuf Leblebici, Seyed Armin Tajalli, Firat Çelik, Ayça Akkaya

This paper presents a comparative study, analyzing the potentials of pulse amplitude modulation (PAM) for implementing next generation high-speed copper wireline links. This comparative study analyzes the sensitivities of PAM2, PAM4 and PAM8 to inter-symbo ...

IEEE2019

A Review on Quantum Computing: From Qubits to Front-end Electronics and Cryogenic MOSFET Physics

Jean-Michel Sallese, Farzan Jazaeri, Seyed Armin Tajalli, Arnout Lodewijk M Beckers

Quantum computing (QC) has already entered the industrial landscape and several multinational corporations have initiated their own research efforts. So far, many of these efforts have been focusing on superconducting qubits, whose industrial progress is c ...

IEEE2019

JESD204B Compliant 12.5 Gb/s LVDS and SST Transmitters in 28 nm FD-SOI CMOS

Andreas Peter Burg, Seyed Armin Tajalli, Yusuf Leblebici, Firat Çelik, Ayça Akkaya

JESD204B compliant low-voltage differential signaling (LVDS), and source-series-terminated (SST) transmitters in 28 nm FD-SOI CMOS technology are presented with 1.1 pJ/bit and 1.7 pJ/bit at 12.5 Gb/s, respectively. An external 6.25 GHz single-ended clock, ...

IEEE2019

A 10b SAR ADC with Widely Scalable Sampling Rate and AGC Amplifier Front-End

Seyed Armin Tajalli, Yusuf Leblebici, Firat Çelik, Ayça Akkaya

This paper presents a low power successive approximation register (SAR) ADC and its front-end automatic gain control (AGC) amplifier designed in 65nm CMOS technology. Digitally controlled variable gain amplifier (VGA) in AGC loop is used to maximize the dy ...

IEEE2018

A Time-Division Multiplexing Signaling Scheme for Inter-Symbol/Channel Interference Reduction in Low-Power Multi-Drop Memory Links

Seyed Armin Tajalli, Yusuf Leblebici, Gain Kim, Kiarash Gharibdoust, Chen Cao

A time-division multiplexing (TDM) digital channel coding scheme with inter-symbol interference (ICI) reduction property for multi-drop memory interfaces has been proposed. Shaping the TX spectrum to avoid channel frequency notches, the proposed digital TD ...

Ieee-Inst Electrical Electronics Engineers Inc2017

A Fully-Digital Spectrum Shaping Signaling for Serial-Data Transceiver with Crosstalk and ISI Reduction Property in Multi-Drop Memory Interfaces

Seyed Armin Tajalli, Yusuf Leblebici, Gain Kim, Kiarash Gharibdoust

An efficient signaling scheme for serial-data transceivers (TRXs) has been proposed, which can properly reduce inter-symbol interference (ISI) and crosstalk (Xtalk) in memory interfaces. The proposed architecture relies on fully-digital implementation rath ...

Ieee2016

A Digital Spectrum Shaping Signaling Serial-Data Transceiver with Crosstalk and ISI Reduction Property in Multi-Drop Interfaces

Seyed Armin Tajalli, Yusuf Leblebici, Gain Kim, Kiarash Gharibdoust

A transceiver (TRX) architecture employing spectrum shaping signaling scheme is proposed, which can significantly reduce inter-symbol interference (ISI) and crosstalk in multi-drop interfaces. The proposed TRX architecture relies on digital implementation ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Jitter Analysis and Measurement in Subthreshold Source-Coupled Differential Ring Oscillators

Seyed Armin Tajalli, Mahsa Shoaran, Yusuf Leblebici

The jitter and the phase noise of ring oscillators utilizing subthreshold source-coupled logic (STSCL) style are analyzed in this paper. Closed-form equations are derived to predict the jitter and phase noise caused by white and flicker noise. Measurement ...

2015

A Subthreshold Current-Sensing Sigma-Delta Modulator for Low-Voltage and Low-Power Sensor Interfaces

Alexandre Schmid, Seyed Armin Tajalli, Yusuf Leblebici, Nikola Katic

A continuous-time (CT) ΣΔ modulator for sensing and direct analog-to-digital conversion of nA-range (subthreshold) currents is presented in this work. The presented modulator uses a subthreshold technique based on subthreshold source-coupled logic cells to ...

Wiley2015

Analysis and Characterization of Variability in Subthreshold Source-Coupled Logic Circuits

Alexandre Schmid, Seyed Armin Tajalli, Mahsa Shoaran, Yusuf Leblebici

This article explores the effect of device parameter variations on the performance of subthreshold source-coupled logic (STSCL) circuits. A test chip has been fabricated in a standard CMOS 90 nm technology to study the matching properties of STSCL circuits ...

2015