Note: Wide-range and high-resolution on-chip delay measurement circuit with low supply-voltage sensitivity for SoC applications

This paper provides an audio 2-1 cascaded ΣΔ modulator using a novel gain-boost class-C inverter. The gain-boost class-C inverter behaves as a subthreshold amplifier. By introducing a gain-boost module, the inverter DC-gain is increased from 48 dB to 67 dB. The gain-boost class-C inverter consumes 57 μW at 1.2-V supply, where the gain-boost module consumes only 3 μW. In addition, an on-chip body bias technique is introduced to compensate the process and supply voltage variations of the class-C inverter. The proposed inverter-based ΣΔ modulator chip is implemented in 0.13-μm CMOS process, and achieves 86-dB peak-signal to noise and distortion ratio (SNDR) and 90-dB dynamic range (DR) over 22.05-KHz bandwidth at 1.2-V supply consuming 360 μW, which demonstrates that the gain-boost class-C inverter is particularly suitable for micro-power high-resolution applications.

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A High-Precision Wide Range On-Chip Path Delay Measurement

International Journal of Engineering Trends and Technology ◽

10.14445/22315381/ijett-v11p290 ◽

2014 ◽

Vol 11 (9) ◽

pp. 450-454

Author(s):

Neelufar Naheed Saudagar ◽

◽

Seema Deshmukh

Keyword(s):

High Precision ◽

Path Delay ◽

Delay Measurement ◽

Wide Range ◽

On Chip

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Compound Identification Using Liquid Chromatography and High-Resolution Noncontact Fraction Collection with a Solenoid Valve

SLAS TECHNOLOGY Translating Life Sciences Innovation ◽

10.1177/2472630319848768 ◽

2019 ◽

Vol 24 (6) ◽

pp. 543-555

Author(s):

Willem Jonker ◽

Koen de Vries ◽

Niels Althuisius ◽

Dick van Iperen ◽

Elwin Janssen ◽

...

Keyword(s):

Liquid Chromatography ◽

High Resolution ◽

Supply Voltage ◽

Solenoid Valve ◽

Dead Volume ◽

Nuclear Magnetic Resonance Analysis ◽

Compound Identification ◽

Fraction Collector ◽

Wide Range ◽

Fraction Collection

We describe the development of a high-resolution, noncontact fraction collector for liquid chromatography (LC) separations, allowing high-resolution fractionation in high-density well plates. The device is based on a low-dead-volume solenoid valve operated at 1–30 Hz for accurate collection of fractions of equal volume. The solenoid valve was implemented in a modified autosampler resulting in the so-called FractioMate fractionator. The influence of the solenoid supply voltage on solvent release was determined and the effect of the frequency, flow rate, and mobile phase composition was studied. For this purpose, droplet release was visually assessed for a wide range of frequencies and flow rates, followed by quantitative evaluation of a selection of promising settings for highly accurate, repeatable, and stable fraction collection. The potential of the new fraction collector for LC-based bioactivity screening was demonstrated by fractionating the LC eluent of a mixture of estrogenic and androgenic compounds, and a surface water sample (blank and spiked with bioactives) combining mass spectrometric detection and two reporter gene assays for bioactivity detection of the fractions. Additionally, a mixture of two compounds was repeatedly LC separated and fractionated to assess the feasibility of the system for analyte isolation followed by nuclear magnetic resonance analysis.

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An Experimental Study of Metastability-Induced Glitching Behavior

Journal of Circuits System and Computers ◽

10.1142/s0218126619400061 ◽

2019 ◽

Vol 28 (supp01) ◽

pp. 1940006

Author(s):

Thomas Polzer ◽

Florian Huemer ◽

Andreas Steininger

Keyword(s):

Decay Constant ◽

Supply Voltage ◽

Careful Consideration ◽

Experimental Measurements ◽

Measurement Circuit ◽

Flip Flop ◽

Systems On Chip ◽

Voltage Dependent ◽

Modeling Theory ◽

On Chip

The increasing number of clock domain crossings in modern systems-on-chip makes the careful consideration of metastability paramount. However, the manifestation of metastability at a flip-flop output is often unduly reduced to late transitions only, while glitches are hardly ever accounted for. In this paper we study the occurrence of glitches resulting from metastability in detail. To this end we propose a measurement circuit whose principle substantially differs from the conventional approach, and by that allows to reliably detect glitches. By means of experimental measurements on an FPGA target we can clearly identify late transitions, single glitches and double glitches as possible manifestations of metastability. Some of these behaviors are unexpected as they do not follow from the traditional modeling theory. We also study the dependence of metastable behavior on supply voltage. Beyond confirming that, as reported in previous literature, the metastable decay constant [Formula: see text] is voltage-dependent, we also produce strong evidence that the relative occurrence of glitches is not voltage-dependent.

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High-resolution and all-digital on-chip delay measurement with low supply sensitivity for SoC applications

IEICE Electronics Express ◽

10.1587/elex.11.20131011 ◽

2014 ◽

Vol 11 (3) ◽

pp. 20131011-20131011

Author(s):

Duo Sheng ◽

Ching-Che Chung ◽

Hsiu-Fan Lai ◽

Shu-Syun Jhao

Keyword(s):

High Resolution ◽

Delay Measurement ◽

On Chip

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Simulation and Performance Analysis of Dielectric Modulated Dual Source Trench Gate TFET Biosensor

Nanoscale Research Letters ◽

10.1186/s11671-021-03486-2 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Chen Chong ◽

Hongxia Liu ◽

Shulong Wang ◽

Shupeng Chen

Keyword(s):

Computer Aided Design ◽

Supply Voltage ◽

High Sensitivity ◽

Sensitivity Study ◽

Voltage Sensitivity ◽

Current Sensitivity ◽

2D Simulation ◽

Detection Of Biomolecules ◽

And Performance ◽

Low Supply Voltage

AbstractIn this paper, a dielectric modulated double source trench gate tunnel FET (DM-DSTGTFET) based on biosensor is proposed for the detection of biomolecules. DM-DSTGTFET adopts double source and trench gate to enhance the on-state current and to generate bidirectional current. In the proposed structure, two cavities are etched over 1 nm gate oxide for biomolecules filling. A 2D simulation in the Technology Computer-Aided Design (TCAD) is adopted for the analysis of sensitivity study. The results show that under low supply voltage, the current sensitivity of the DM-DSTGTFET is as high as 1.38 × 105, and the threshold voltage sensitivity can reach 1.2 V. Therefore, the DM-DSTGTFET biosensor has good application prospects due to its low power consumption and high sensitivity.

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