DocumentCode
1347802
Title
FRC: a method for extending the resolution of Nyquist rate converters using oversampling
Author
Harjani, Ramesh ; Lee, Tom A.
Author_Institution
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Volume
45
Issue
4
fYear
1998
fDate
4/1/1998 12:00:00 AM
Firstpage
482
Lastpage
494
Abstract
Nyquist rate converters have traditionally been used for low to moderate resolution data acquisition applications. In this paper, we describe a feedforward residue compensation (FRC) technique to extend the resolution of such converters using an oversampling modulator loop. Closed-form analytical expressions are developed to provide insight into the operation and limits on the resolution of such converters. Simulation results are used to verify the operation and confirm the limitations of this technique
Keywords
analogue-digital conversion; compensation; feedforward; sigma-delta modulation; Nyquist rate converters; feedforward residue compensation; oversampling; oversampling modulator loop; resolution extension; Analog-digital conversion; Capacitors; Data acquisition; Digital filters; Linearity; Low pass filters; Low-frequency noise; Noise reduction; Noise shaping; Quantization;
fLanguage
English
Journal_Title
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1057-7130
Type
jour
DOI
10.1109/82.663805
Filename
663805
Link To Document