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Browsing Electronic & Computer Engineering by Author "O'Brien, Vincent"

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Browsing Electronic & Computer Engineering by Author "O'Brien, Vincent"

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  • Mullane, Brendan; O'Brien, Vincent (Springer, 2012)
    Direct Digital Synthesis (DDS) systems generate fine frequency resolution signals over a broad spectrum that are used in a wide variety of applications such as multi-mode RF, communications, measurements and test. A ...
  • Mehta, Shantanu; O'Hare, Daniel; O'Brien, Vincent; Thompson, Eric; Mullane, Brendan (IEEE Computer Society, 2020)
    This paper presents the design of a low-latency, highly linear current-steering DAC for use in continuous-time ADCs. A detailed analysis of equivalent unary-weighted current-steering DAC topologies in terms of mismatch, ...
  • Scanlan, Tony; O'Hare, Daniel; Halton, Mark; O'Brien, Vincent; Mullane, Brendan; Thompson, Eric (Emerald Group Publishing Ltd,, 2017)
    Purpose The purpose of this paper is to present analysis of the feedback predictive encoder based ADC (Analog-to-Digital Converter). Design/methodology/approach The use of feedback predictive encoder based ADCs presents ...
  • O'Brien, Vincent (University of Limerick, 2017)
    This thesis presents the analysis and design of dynamic element matching (DEM) decoders targeted at both discrete and continuous time oversampling delta sigma data converters. Discrete time delta sigma data converters ...
  • Mooney, James; Halton, Mark; Iordanov, Petar; O'Brien, Vincent (IEEE Computer Society, 2015)
                               Multi-bit sigma-delta based digital pulse width modulators (DPWM) are used in the control of DC-DC converters in order to achieve high resolution and therefore high output voltage accuracy at ...
  • O'Brien, Vincent; Mullane, Brendan (IEEE Computer Society, 2020)
    Delta Sigma data converters employing high order dynamic element matching (DEM) allow for accurate signal conversion in the presence of DAC mismatch. However, at low oversampling rates, current high order DEM decoders ...
  • Mullane, Brendan; O'Brien, Vincent (IEEE Computer Society, 2018)
    This paper presents a processor architecture for Fast Fourier Transform computation of real-valued signals for on-chip analog to digital converter test and evaluation. The design performs a radix-2 technique optimized for ...
  • O'Brien, Vincent; Scanlan, Anthony G.; Mullane, Brendan (Springer, 2017)
    This paper presents a dynamic element matching (DEM) decoder incorporating both intersymbol interference (ISI) and mismatch error shaping. From the analysis of ISI error in multi-bit DACs, an algorithm is developed ...
  • Mehta, Shantanu; Mullane, Brendan; O'Brien, Vincent; Pelliconi, Roberto; Erdmann, Christophe; Farley, Brendan (IEEE Computer Society, 2020)
    This paper presents a 6th order programmable bandpass dynamic-element-matching (DEM) that shapes the static mismatch error of a Nyquist DAC for any choice of center-frequency. The mismatch error can be shaped over a ...

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