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MS Final Thesis – Emanuel Caceres

Pseudo-Pseudo-Differential Implementation of a Low-distortion Second Order Delta-Sigma Modulator

Recently pseudo-pseudo-differential (PPD) circuits were introduced as a means to obtain performances inherent to fully-differential (FD) and pseudo-differential (PD) structures, but with a power-efficiency comparable to those of single-ended (SE) ones. Some of the key benefits of this time-interleaved sampled-data technique include reduction of low-frequency noise as well as even-distortion and potentially less number of required pins and pads of the chip. Moreover, depending on the application, it can directly allow for single-ended implementations, exploiting the simplicity and efficiency of inverter-based circuits, while avoiding the use of common-mode feedback blocks. This work adopts a low-distortion multi-bit discrete-time second-order delta-sigma modulator ADC with 20 kHz bandwidth and an oversampling-ratio of 128 and compares the performance of its implementation using PPD, PD and SE techniques.

Major Advisor: Gabor Temes
Committee: David Allstot
Committee: Un-Ku Moon
Committee: Matthew Johnston
GCR: Nathan Gibson

Tuesday, November 13, 2018 at 9:30am to 11:30am

Kelley Engineering Center, 1007
110 SW Park Terrace, Corvallis, OR 97331

Event Type

Lecture or Presentation

Event Topic


College of Engineering, Electrical Engineering and Computer Science
Contact Name

Calvin Hughes

Contact Email

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