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Sensors 2015, 15(2), 4408-4424; doi:10.3390/s150204408

A High Resolution On-Chip Delay Sensor with Low Supply-Voltage Sensitivity for High-Performance Electronic Systems

Department of Electrical Engineering, Fu Jen Catholic University, Taipei 24205, Taiwan
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Author to whom correspondence should be addressed.
Received: 4 December 2014 / Revised: 9 February 2015 / Accepted: 9 February 2015 / Published: 13 February 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1230 KB, uploaded 13 February 2015]   |  

Abstract

An all-digital on-chip delay sensor (OCDS) circuit with high delay-measurement resolution and low supply-voltage sensitivity for efficient detection and diagnosis in high-performance electronic system applications is presented. Based on the proposed delay measurement scheme, the quantization resolution of the proposed OCDS can be reduced to several picoseconds. Additionally, the proposed cascade-stage delay measurement circuit can enhance immunity to supply-voltage variations of the delay measurement resolution without extra self-biasing or calibration circuits. Simulation results show that the delay measurement resolution can be improved to 1.2 ps; the average delay resolution variation is 0.55% with supply-voltage variations of ±10%. Moreover, the proposed delay sensor can be implemented in an all-digital manner, making it very suitable for high-performance electronic system applications as well as system-level integration. View Full-Text
Keywords: delay sensor; voltage variations; delay measurement; VLSI; all digital delay sensor; voltage variations; delay measurement; VLSI; all digital
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sheng, D.; Lai, H.-F.; Chan, S.-M.; Hong, M.-R. A High Resolution On-Chip Delay Sensor with Low Supply-Voltage Sensitivity for High-Performance Electronic Systems. Sensors 2015, 15, 4408-4424.

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