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IEICE TRANSACTIONS on Electronics

An 8b 200 MHz Time-Interleaved Subranging ADC Based on a Single-Poly Digital CMOS Process

Jung-Woong MOON, Seung-Hoon LEE

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Summary :

This work describes an 8b 200 MHz time-interleaved subranging analog-to-digital converter (ADC) based on a single-poly digital CMOS process. Two fine ADCs for lower digital bits of the proposed ADC employ a time-sharing double- channel architecture to increase the sampling speed and a new reference voltage switching scheme to reduce the settling time of the reference voltages and the chip area. The proposed intermeshed resistor string, which generates reference voltages for fine ADCs, improves the linearity and the settling time of the reference voltages simultaneously. The proposed sample-and-hold amplifier employs an input dynamic common mode feedback circuit for high dynamic performance, based on conventional common-drain amplifiers and passive differential circuits.

Publication
IEICE TRANSACTIONS on Electronics Vol.E86-C No.3 pp.506-513
Publication Date
2003/03/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Electronic Circuits

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