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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 in-band quantization noise. In this paper, we use positive feedback to realize complex-conjugate poles with a passive input stage, obtaining the same noise-shaping as an...
master thesis 2022
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Buduguppa, Aravind (author)
To prevent microprocessors from getting too hot or too cold, multiple temperature sensors are required to monitor their internal temperatures at different locations. Such sensors should be as compact as possible<br/>to maximize their usage in dense layouts and should be able to cover a wide temperature range. This thesis describes a compact...
master thesis 2022
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Grubor, Miloš (author)
This thesis describes the design of a digital backend for a resistor-based temperature sensor realized in a 180nm CMOS process. The sensor’s analog frontend outputs a bitstream at 500kHz, which is then decimated and linearized with the help of 3 different polynomials, whose coefficients are obtained after a calibration process. A polynomial...
master thesis 2022
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Mehrotra, Shubham (author)
Analog-to-Digital Converters (ADCs) used in high fidelity audio applications require high linearity and a wide dynamic range (&gt;100 dB). Moreover, for use in portable electronic devices such as smartphones, tablets, and hearing aids, these ADCs must also achieve high energy efficiency. This requirement of high linearity and high energy...
master thesis 2021
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Toth, Nandor (author)
This thesis presents an energy-efficient high-accuracy temperature sensor that combines a BJT front-end with a continuous-time readout circuit. Its front-end is based on PNP transistors, which, compared to NPNs, are more widely available in CMOS processes and less sensitive to stress. In this design, proportional-to-absolute-temperature (PTAT)...
master thesis 2021
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Sharma, Shrinidhi (author)
Integrated circuits (ICs) are susceptible to damage by Electrostatic Discharge (ESD), which necessitates protection diodes. However, these diodes can cause leakage currents in the range of picoamperes, dominating the input current of CMOS ICs. This thesis presents the implementation of a low leakage bootstrapped ESD protection circuit for...
master thesis 2021
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Saad, Mohamed (author)
This thesis presents a BJT-based CMOS temperature-to-digital converter (TDC). With a continuous-time readout, the TDC avoids the kT/C noise limit incurred by previous discrete-time (switched-capacitor) TDCs. An energy-efficient BJT front-end generates single PTAT and CTAT currents for being digitized by a delta-sigma modulator through a linear...
master thesis 2020
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van Hoek, Vincent (author)
This thesis describes the design of an ultra-low power temperature to digital converter. It is intended to monitor the excess heat produced during the wireless charging of implantable medical devices such as pacemakers. The TDC is designed to achieve an accuracy of ±0.1 °C (3 sigma) from 27 °C to 47 °C, and ±0.3 °C (3 sigma) from -40 °C to 85 °C...
master thesis 2019
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Preda, Valeria (author)
Smart temperature sensors can be used for the temperature compensation of micro-electromechanical (MEMS) frequency references. From the different types of CMOS temperature sensors, resistor-based sensors are currently the most energy-efficient. However, compared with bipolar transistor (BJT)-based temperature sensors, resistors suffer from...
master thesis 2019
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Tatu, Cristi (author)
Analog-to-digital converters are important blocks in any electronic system which act as a bridge between analog signals and digital processors. The conventional SAR ADC employs a binary search algorithm and has emerged as the most suitable solution for low-power applications, due to its excellent power efficiency. The proposed ADC architecture...
master thesis 2019
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Kishore Kumar, Rushil (author)
This thesis presents the most energy-efficient BJT-based CMOS temperature-to-digital converter (TDC) reported to date. It is based on a continuous-time front-end, which avoids the kT/C noise limit incurred by previous discrete-time (switched-capacitor) front-ends. An energy-efficient capacitively-coupled instrumentation amplifier (CCIA) boosts...
master thesis 2018
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Loopik, Leon (author)
This thesis presents the design and testing of a multi-path analog-to-digital converter for current sensing in battery management systems. The specifications of this converter are (1) continuously integrate and convert a signal at 125 Hz with a resolution of 20 bit and (2) perform on demand fast conversions of 20 μs at a resolution of 14 bit....
master thesis 2017
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Ligouras, C. (author)
master thesis 2017
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Yan, Y. (author)
Nowadays, the BJT-based temperature sensors have occupied the majority of the market. Due to process spread, BJT-based temperature sensors usually requires calibration. Currently, thermal calibration is the only method. However, it is usually costly and time consuming. In this paper, a new calibration method called voltage calibration is...
master thesis 2017
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Pan, S. (author)
High-resolution energy-efficient temperature sensors are often used for the temperature compensation of frequency references, and of a wide variety of other sensors. Of the various types of CMOS-compatible temperature sensors, those based on resistors are, at least in principle, the most energy efficient. The challenge is then how to design...
master thesis 2016
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van Dijk, J.P.G. (author)
Temperature sensors are widely integrated in high performance systems, e.g. microprocessors. If the die temperature becomes too high, the processor must throttle its clock speed to prevent reliability problems. This application requires temperature sensors that can be integrated in the same advanced technologies as the microprocessor, and that...
master thesis 2016
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Rooijers, C.T. (author)
A sampled voltage reference aims to achieve both low-power and low-noise 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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Bacchu, R.R. (author)
As capacitive sensing provides flexible and reliable touch user interfaces for a varied set of applications, it has gained popularity over other touch sensing techniques. Consequently, capacitive touchscreens when interfaced with large display panels increases the number of channels that a readout IC has to support. As existing area-intensive...
master thesis 2015
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Koleoso, O.E. (author)
Cryogenic temperature sensors are finding broadened applications. Such applications include: Cryosurgery [1.3], quantum computing, deep-space probes and planetary missions, satellite communications systems and space-based radar, ultra-high-speed/high sensitivity instrumentation systems, medical electronics (e.g. CT scanner), superconductor...
master thesis 2015
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Angevare, J.A. (author)
A highly digital temperature sensor, based on the thermal diffusivity of silicon, for thermal management applications has been reported. Recently, Thermal-Diffusivity based temperature sensors have undergone a radical change from an analog-based readout architecture to a more digital VCO-based one. However the more digital approach led to...
master thesis 2015
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