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- Duppils, Mattias, et al.
(författare)
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A novel mixed analog/digital MAC unit implemented with SC technique suitable for fully programmable narrow-band FIR filter applications
- 1999
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Ingår i: Proceedings of ICECS '99. The 6th IEEE International Conference on Electronics, Circuits and Systems, 1999. - 0780356829 ; , s. 1197-1200
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Konferensbidrag (refereegranskat)abstract
- A mixed analog/digital (MAD) multiply-accumulate (MAC) unit, implemented with switched-capacitor (SC) technique is presented. The MAC unit consist of a programmable capacitor array (PCA) for coefficient representation, and an integrator for accumulation. A coefficient compensation technique to neutralize the non-ideal MAC properties due to finite opamp gain is introduced. The MAD-MAC unit is a new concept for effective mapping of signal processing tasks on SC technique; in particular high-order fully programmable narrow-band FIR filter applications. The utilization of the MAD-MAC unit concept is shown with a simulation of a decimated 400-tap narrow-band FIR filter
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- Duppils, Mattias, et al.
(författare)
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A study of the non-ideal properties of sample-and-hold circuits with respect to the analog bandwidth
- 1999
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Ingår i: Proc. of 3rd IEE Int. Conf. on Advanced A/D and D/A Conversion Techniques and Their Applications. - : IEE. - 0852967187 ; , s. 119-121
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Konferensbidrag (refereegranskat)abstract
- The fast evolving communication market demands decreased fabrication cost, which will be met by highly integrated circuit solutions. In the near future, we will see system-on-a-chip solutions in CMOS technology, where transceivers will be integrated on a single chip preferably, also with digital circuitry. Receiver topologies with A/D conversion at higher frequencies are interesting from an integration point of view. Therefore, a deeper understanding of the A/D converter limitations to cope with high-frequency signals is needed. This paper will highlight the track-and-hold circuit linearity, which is a frequency dependent fundamental limit on the A/D conversion accuracy
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- Duppils, Mattias, et al.
(författare)
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Realization of fully programmable narrow-band FIR filters with SC technique
- 1999
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Ingår i: 42nd Midwest Symposium on Circuits and Systems, 1999. - 0780354915 ; , s. 464-468
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Konferensbidrag (refereegranskat)abstract
- A methodology to implement fully programmable narrow-band FIR filters with switched capacitor (SC) technique is presented. The SC implementation, which offers a fixed order of complexity, is suitable for high-order FIR filter realizations followed by decimation. The filter performance and the requirements are analyzed
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