Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 78 for “"Analog-to-digital converters"”.
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Pipelined oversampling analog-to-digital converters
… as [delta sigma] modulation, are widely used in analog-to-digital conversion to achieve accuracy that exceeds that of integrated-circuit components. Such converters have an inherent tradeoff between accuracy and speed, whereby resolution in amplitude is achieved at the expense of resolution in …
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Integrated photonic analog-to-digital converters
Accurate conversion of wideband multi-GHz analog signals into the digital domain has long been a target of analog-to-digital converter (ADC) developers, driven by applications in radar systems, software radio, medical imaging, and communication systems. Aperture jitter has been a major bottleneck …
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Dynamic amplifiers for analog-to-digital converters
… in CMOS technologies have brought benefits to both digital and analog integrated circuits. However, lower output impedance and reduced supply voltage have also caused newer challenges, especially for the design of operational amplifiers (op-amps) to implement gain. In this dissertation, …
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Analog to digital converters for CMOS imagers
A/D converters for single chip CMOS imagers have often been designed using the column-parallel approach, employing a slow A/D converter for each column of the sensor array. This thesis investigates a serial approach utilizing a single fast A/D converter to process all of the imager pixels. If power …
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BER-optimal analog-to-digital converters for communication links
In this thesis, we propose BER-optimal analog-to-digital converters (ADC) where quantization levels and thresholds are set non-uniformly to minimize the bit-error rate (BER). This is in contrast to present-day ADCs which act as transparent waveform preservers. We define the ADC shaping gain metric …
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Flash analog-to-digital converters with time-based techniques
High-speed medium-resolution flash analog-to-digital converters (ADCs) are in high demand in today's wireless and wireline systems. Conventional flash ADCs suffer from limited resolution and high power consumption. This thesis investigates time-based techniques that enhance the performance of a …
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Low-power design techniques for pipelined analog-to-digital converters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Analog-to-Digital Converters for Secure and Emerging AIoT Applications
… development of novel energyefficient hardware. Analog neural networks (ANNs) with in-memory computing (IMC) using resistive random-access memory (RRAM) are promising architectures to reduce latency and increase energy efficiency for IoT devices. However, interface circuitry, including …
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A delay line architecture for high-speed analog-to-digital converters
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Dynamic error correction method for high-speed analog-to-digital converters
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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Code-error calibration techniques for two-step flash analog-to-digital converters
Flash-type analog-to-digital converters (ADCs) have been extensively used for high-speed applications such as high-performance TVs, image recognition, radar, and medical instrumentation. However, the linearity of these state-of-the-art flash-type ADCs has been limited to 10 bits by ratio mismatch …
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Digital self-calibration techniques for high-accuracy, high speed analog-to-digital converters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Post Conversion Correction of Non-Linear Mismatches for Time Interleaved Analog-to-Digital Converters
Time Interleaved Analog-to-Digital Converters (TI-ADCs) utilize an architecture which enables conversion rates well beyond the capabilities of a single converter while preserving most or all of the other performance characteristics of the converters on which said architecture is based. Most of the …
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Application of Precision Successive-approximation-register Analog-to-digital Converters for Digital Root-mean-square Calculation
The advancement of semiconductor manufacturing processes has allowed for the availability of powerful microcontrollers at lower costs, granting system designers the flexibility to select between analog and digital signal processing techniques. Enabled by recent developments in low-power successive …
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An implementation of sine wave test setup for automated measurement of high-performance analog-to-digital converters
… thesis was developed as part of a larger effort to design a high-performance ADC from the signal integrity standpoint. The direct motivation for designing a custom system was the need to evaluate the performance of the newly designed device, but also to create a vendor-independent solution that …
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A Parallel Architecture for Analog-to-Digital Conversion with Improved Dynamic Range
In this thesis, a parallel architecture for Analog-to-Digital Converters (ADCs) is developed to increase the system dynamic range. The proposed architecture is a critical component for a Continuous Wave Stepped Frequency (CWSF) radar system. Existing Commercial Off-The-Shelf (COTS) components are …
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Optimization of tunable silicon compatible microring filters
Microring resonators can be used as pass-band filters for wavelength division demultiplexing in electronic-photonic integrated circuits for applications such as analog-to-digital converters (ADCs). For high quality signal transmission, the resonant frequency of the filter has to be held at certain …
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A global maximum power point tracking DC-DC converter
… without the use of costly components such as analog-to-digital converters and microprocessors. It substantially increases the efficiency of solar power conversion by allowing solar cells to operate at their ideal operating point regardless of changes in load, and illumination. The converter …
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