Journal cover Journal topic
Advances in Radio Science An open-access journal of the U.R.S.I. Landesausschuss in der Bundesrepublik Deutschland e.V.

Journal metrics

  • CiteScore<br/> value: 0.28 CiteScore
    0.28
  • SNIP value: 0.303 SNIP 0.303
  • SJR value: 0.278 SJR 0.278
  • IPP value: 0.207 IPP 0.207
  • h5-index value: 8 h5-index 8
Adv. Radio Sci., 3, 277-280, 2005
https://doi.org/10.5194/ars-3-277-2005
© Author(s) 2005. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
 
12 May 2005
A 8X Oversampling Ratio, 14bit, 5-MSamples/s Cascade 3-1 Sigma-delta Modulator
Y. Yin1,*, H. Klar1, and P. Wennekers2 1Technical University of Berlin − Institute of Computer Engineering and Microelectronics, Berlin, Germany
2TSO-EMEA, Laboratory Berlin, Freescale Semiconductor Inc., Germany
*now at: TSO-EMEA, Laboratory Berlin, Freescale Semiconductor Inc., Germany
Abstract. A 14-b, 5-MHz output-rate cascaded 3-1 sigma-delta analog-to-digital converters (ADC) has been developed for broadband communication applications, and a novel 4th-order noise-shaping is obtained by using the proposed architecture. At a low oversampling ratio (OSR) of 8, the ADC achieves 91.5dB signal-to-quantization ratio (SQNR), in contrast to 71.8dB of traditional 2-1-1 cascaded sigma-delta ADC in 2.5-MHz bandwidth and over 80dB signal-to-noise and distortion (SINAD) even under assumptions of awful circuit non-idealities and opamp non-linearity. The proposed architecture can potentially operates at much more high frequencies with scaled IC technology, to expand the analog-to-digital conversion rate for high-resolution applications.

Citation: Yin, Y., Klar, H., and Wennekers, P.: A 8X Oversampling Ratio, 14bit, 5-MSamples/s Cascade 3-1 Sigma-delta Modulator, Adv. Radio Sci., 3, 277-280, https://doi.org/10.5194/ars-3-277-2005, 2005.
Publications Copernicus
Download
Share