A self-timed multipurpose delay sensor for field programmable gate arrays (FPGAs)

Gomez Osuna, Carlos and Ituero Herrero, Pablo and López Vallejo, Marisa (2014). A self-timed multipurpose delay sensor for field programmable gate arrays (FPGAs). "Sensors", v. 14 (n. 1); pp. 129-143. ISSN 1424-8220. https://doi.org/10.3390/s140100129.

Description

Title: A self-timed multipurpose delay sensor for field programmable gate arrays (FPGAs)
Author/s:
  • Gomez Osuna, Carlos
  • Ituero Herrero, Pablo
  • López Vallejo, Marisa
Item Type: Article
Título de Revista/Publicación: Sensors
Date: January 2014
ISSN: 1424-8220
Volume: 14
Subjects:
Freetext Keywords: Sensor; delay; temperature; FPGA; monitoring; PVT variations; clockless; aging; self-timed
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Ingeniería Electrónica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents a novel self-timed multi-purpose sensor especially conceived for Field Programmable Gate Arrays (FPGAs). The aim of the sensor is to measure performance variations during the life-cycle of the device, such as process variability, critical path timing and temperature variations. The proposed topology, through the use of both combinational and sequential FPGA elements, amplifies the time of a signal traversing a delay chain to produce a pulse whose width is the sensor’s measurement. The sensor is fully self-timed, avoiding the need for clock distribution networks and eliminating the limitations imposed by the system clock. One single off- or on-chip time-to-digital converter is able to perform digitization of several sensors in a single operation. These features allow for a simplified approach for designers wanting to intertwine a multi-purpose sensor network with their application logic. Employed as a temperature sensor, it has been measured to have an error of ±0.67 °C, over the range of 20–100 °C, employing 20 logic elements with a 2-point calibration.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2012-31292TOLERAUnspecifiedUnspecified

More information

Item ID: 28971
DC Identifier: http://oa.upm.es/28971/
OAI Identifier: oai:oa.upm.es:28971
DOI: 10.3390/s140100129
Official URL: http://www.mdpi.com/1424-8220/14/1/129
Deposited by: Memoria Investigacion
Deposited on: 07 Jun 2014 12:29
Last Modified: 11 Apr 2019 10:03
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