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YU, Jinqian (author)This thesis focuses on the design of a high input impedance sensor readout system based on a continuoustime sigmadelta modulator with finiteimpulseresponse digitaltoanalog converter feedback.<br/><br/>Both the systemlevel and circuitlevel design techniques of this system are investigated. The concept and design methods of finiteimpulse...master thesis 2022
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Pecanins Martínez, Victor (author)Several techniques have been proposed to reduce the swing at the input stage of a CTDSM. One of these is using a simple passive RC input stage. In prior works, this increased inband quantization noise. In this paper, we use positive feedback to realize complexconjugate poles with a passive input stage, obtaining the same noiseshaping as an...master thesis 2022
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Toth, Nandor (author)This thesis presents an energyefficient highaccuracy temperature sensor that combines a BJT frontend with a continuoustime readout circuit. Its frontend is based on PNP transistors, which, compared to NPNs, are more widely available in CMOS processes and less sensitive to stress. In this design, proportionaltoabsolutetemperature (PTAT)...master thesis 2021
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Saad, Mohamed (author)This thesis presents a BJTbased CMOS temperaturetodigital converter (TDC). With a continuoustime readout, the TDC avoids the kT/C noise limit incurred by previous discretetime (switchedcapacitor) TDCs. An energyefficient BJT frontend generates single PTAT and CTAT currents for being digitized by a deltasigma modulator through a linear...master thesis 2020
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Gonen, B. (author), Karmakar, S. (author), van Veldhoven, Robert (author), Makinwa, K.A.A. (author)This article presents a continuousTime zoom analog to digital converter (ADC) for audio applications. It employs a highspeed asynchronous SAR ADC that dynamically updates the references of a continuousTime deltasigma modulator (CTDSM). Compared to previous switchedcapacitor (SC) zoom ADCs, its input impedance is essentially resistive,...journal article 2020
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Pan, S. (author), Makinwa, K.A.A. (author)This article describes a highly energyefficient Wheatstone bridge temperature sensor. To maximize sensitivity, the bridge is made from resistors with positive (silicided diffusion) and negative (poly) temperature coefficients. The bridge is balanced by a resistive (poly) FIRDAC, which is part of a 2ndorder continuoustime deltasigma...journal article 2020
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Jiang, H. (author), Nihtianova, S. (author), Makinwa, K.A.A. (author)This paper describes an energyefficient bridge readout IC (ROIC), which consists of a capacitively coupled instrumentation amplifier (CCIA) that drives a continuoustime delta–sigma modulator (CTM). By exploiting the CCIA’s ability<br/>to block dc commonmode voltages, the bridge’s bias voltage may exceed the ROIC’s supply voltage, allowing...journal article 2019
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Fearnhead, Paul (author), Bierkens, G.N.J.C. (author), Pollock, Murray (author), Roberts, Gareth O. (author)Recently, there have been conceptually new developments in Monte Carlo methods through the introduction of new MCMC and sequential Monte Carlo (SMC) algorithms which are based on continuoustime, rather than discretetime, Markov processes. This has led to some fundamentally new Monte Carlo algorithms which can be used to sample from, say, a...journal article 2018
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Pan, S. (author), Luo, Yanquan (author), Heidary Shalmany, S. (author), Makinwa, K.A.A. (author)This paper describes a highresolution energyefficient CMOS temperature sensor, intended for the temperature compensation of MEMS/quartz frequency references. The sensor is based on silicided polysilicon thermistors, which are embedded in a Wienbridge RC filter. When driven at a fixed frequency, the filter exhibits a temperaturedependent...journal article 2018
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Jiang, H. (author), Ligouras, C. (author), Nihtianova, S. (author), Makinwa, K.A.A. (author)When chopping is applied to a continuoustime sigmadelta modulator (CTΣΔM), quantization noise foldback often occurs, leading to increased inband noise. This can be prevented by employing a returntozero (RZ) digitaltoanalog converter (RZ DAC) in the modulator's feedback path and arranging the chopping transitions to coincide with its RZ...journal article 2018
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Pan, S. (author), Makinwa, K.A.A. (author)This paper describes a compact, energy efficient, resistorbased temperature sensor that can operate over a wide temperature range (55 °C125 °C). The sensor is based on a Wheatstone bridge (WhB) made from silicided polysilicon and nonsilicided polysilicon resistors. To achieve both area and energy efficiencies, the current output of the WhB...journal article 2018
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van der Hoek, D.C. (author)Increasing the capacity of offshore wind energy is a necessary step in the transition from fossil fuels to renewable energy sources. In order to accelerate this process, the costs of wind energy should be reduced to make it more competitive with traditional energy sources. Cost reduction could be achieved by increasing the lifetime of an...master thesis 2017
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Jiang, H. (author), Vogel, J.G. (author), Nihtianova, S. (author)This paper presents a direct digital converter for Wheatstone bridge sensors, which is realized with commercial offtheshelf components. The power efficiency of the readout is enhanced by embedding the bridge sensor in a secondorder continuoustime sigmadelta modulator (CTDeltaSigmaM). By directly digitizing the output signal of a Wheatstone...journal article 2017
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Bierkens, G.N.J.C. (author), Duncan, Andrew (author)Markov chain Monte Carlo (MCMC) methods provide an essential tool in statistics for sampling from complex probability distributions. While the standard approach to MCMC involves constructing discretetime reversible Markov chains whose transition kernel is obtained via the MetropolisHastings algorithm, there has been recent interest in...journal article 2017
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Kostałkowski, M.K. (author)Every year number of prematurely born infants grows. Most underdeveloped organ after birth is brain. Therefore its monitoring is very important, especially as it can provide indications about health state in a future, both short and long term. Non invasive method of brain monitoring is EEG recording. However tedious process of system set up and...master thesis 2016
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Rooijers, C.T. (author)A sampled voltage reference aims to achieve both lowpower and lownoise by storing the output of a voltage reference on a capacitor for a long time. This allows the reference to be switched off during the hold period, which leads to lower average power. At the same time, all the voltage reference's noise is pushed down into a bandwidth...master thesis 2016
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 Souri, K. (author) master thesis 2013
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Singh, G. (author)Bridge sensors are widely used for accurate measurement of physical quantities such as temperature, pressure, strain or altitude. Such sensors require a lownoise, highresolution and accurate readout system with high input impedance. In order to meet these requirements, conventional sensor readout systems use multiple stages which typically...master thesis 2011
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Bolatkale, M. (author), Breems, LJ (author), Rutten, Robert (author), Makinwa, K.A.A. (author)A 4 GHz thirdorder continuoustime ΔΣ ADC is presented with a loop filter topology that absorbs the pole caused by the input capacitance of its 4bit quantizer and also compensates for the excess delay caused by the quantizer's latency. The ADC was implemented in 45 nmLP CMOS and achieves 70 dB DR and 74 dBFS THD in a 125 MHz BW, while...journal article 2011
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 Bhamidi, S. (author), Van der Hofstad, R. (author), Hooghiemstra, G. (author) journal article 2010
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