High-Speed Low-Power CMOS Pipelined Analog-to-Digital Converter

Ri-A JU  Dong-Ho LEE  Sang-Dae YU  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E82-A   No.6   pp.981-986
Publication Date: 1999/06/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section of Papers Selected from 1998 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC '98))
Category: 
Keyword: 
analog-to-digital conversion,  pipelined analog-to-digital conversion,  low power dissipation,  operational amplifier sharing,  

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Summary: 
This paper describes a 10-bit 40-MS/s pipelined A/D converter implemented in a 0.8-µm double-poly, double-metal CMOS process. This A/D converter achieves low power dissipation of 36-mW at 5-V power supply. A 1.5-bit/stage pipelined architecture allows large correction range for comparator offset, and performs fast interstage signal processing. For high speed and low power operation, the sample-and-hold amplifier is designed using op-amp sharing technique and dynamic comparator. In addition, fully-differential folded-cascode op amp with gain-boosting stage is designed by an automatic design tool. When 10-MHz input signal is applied, SNDR is 55.0 dB, and SNR is 56.7 dB. The DNL and INL exhibit 0.6 LSB, +1/-0.75 LSB respectively.