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| Title: | A low-voltage zero-crossing-based delta-sigma analog-to-digital converter | | Author: | Guyton, Matthew C. (Matthew Christopher) | | Other Contributors: | Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. | | Advisor: | Hae-Seung Lee. | | Department: | Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science. | | Publisher: | Massachusetts Institute of Technology | | Issue Date: | 2010 | | Abstract: | A zero-crossing-based (ZCB) switched-capacitor technique is presented for operation under low power supply voltages without gate boosting. Voltage ramp generators maintain common-mode level at each integrator output. Correlated level-shifting is used to increase the effective output impedance of gated current sources. The technique was used to design a single-bit 4th-order delta-sigma analog-to-digital converter for audio applications. The prototype ADC was implemented in 0.13 [mu]m CMOS and achieves 11.9 ENOB for 60 kHz input bandwidth while dissipating 1.2 mW power. | | Description: | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010. Cataloged from PDF version of thesis. Includes bibliographical references (p. 179-183). |
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