Title :
A 126 dB linear switched-capacitor delta-sigma modulator
Author :
Kerth, D.A. ; Kasha, D.B. ; Mellissinos, T.G. ; Piasecki, D.S. ; Swanson, E.J.
Author_Institution :
Crystal Semicond. Corp., Austin, TX, USA
Abstract :
Low-frequency measurement applications where low power, high dynamic range and high linearity are important naturally migrate toward oversampling converters. Measuring seismic activity is one such application that requires at least 120 dB S/D. The switched-capacitor delta-sigma modulator presented in this paper achieves the above goals with single-ended linearity in excess of 120 dB. Various distortion mechanisms in switched-capacitor topologies are explained along with solutions.<>
Keywords :
analogue-digital conversion; delta modulation; electric distortion; seismology; signal processing equipment; switched capacitor networks; distortion; dynamic range; linearity; low power; low-frequency measurement; oversampling converters; seismic activity; seismicity; signal processing; switched-capacitor delta-sigma modulator; Delta modulation; Distortion measurement; Filters; Linearity; Nonlinear distortion; Power semiconductor switches; Sampling methods; Seismic measurements; Semiconductor device noise; Switched capacitor networks;
Conference_Titel :
Solid-State Circuits Conference, 1994. Digest of Technical Papers. 41st ISSCC., 1994 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-1844-7
DOI :
10.1109/ISSCC.1994.344672
