Power estimation of recursive and non-recursive CIC filters implemented in deep-submicron technology

Abbas, Muhammad; Gustafsson, Oscar; Wanhammar, Lars

doi:10.1109/icgcs.2010.5543063

Cited by 17 publications

(6 citation statements)

References 6 publications

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“…Hence, as a complexity measure here we consider the number of non-zero digits of the coefficients as this will correspond to the area complexity occupied by full and half adder cells [8]- [10]. In addition, the number of registers, without pipelining the summation tree, is proportional to the filter order [8], [9].…”

Section: Milp Design Of Fir Filters With Minimum Number Of Non-zmentioning

confidence: 99%

Decimation filters for high-speed delta-sigma modulators with passband constraints: General versus CIC-based FIR filters

Gustafsson

Johansson

2015

2015 IEEE International Symposium on Circuits and Systems (ISCAS)

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For high-speed delta-sigma modulators the decimation filters are typically polyphase FIR filters as the recursive CIC filters can not be implemented because of the iteration period bound. In addition, the high clock frequency and short input word length make multiple constant multiplication techniques less beneficial. Instead a realistic complexity measure in this setting is the number of non-zero digits of the FIR filter tap coefficients. As there is limited control of the passband approximation error for CIC-based filters these must in most cases be compensated to meet a passband specification. In this work we investigate the complexity of decimation filters meeting CIC-like stopband behavior, but with a well defined passband approximation error. It is found that the general approach can in many cases produce filters with much smaller passband approximation error at a similar complexity.

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Section: Milp Design Of Fir Filters With Minimum Number Of Non-zmentioning

confidence: 99%

Decimation filters for high-speed delta-sigma modulators with passband constraints: General versus CIC-based FIR filters

Gustafsson

Johansson

2015

2015 IEEE International Symposium on Circuits and Systems (ISCAS)

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“…The dynamic power consumption of a decimation filter can be estimated by the number of required full adders (FA) and registers (FF) as follows [4], where is the relative frequency of the filter compared with the input frequency, and is the word length increase to avoid overflow. The word length increase can be calculated as [2] where K is the number of cascaded filters.…”

Section: Power and Area Estimation For Cic And Non-recursive Combmentioning

confidence: 99%

Power and area efficient comb-based decimator for Sigma-Delta ADCs with high decimation factors

Salgado

Dolecek

Rosa

2013

2013 IEEE International Symposium on Circuits and Systems (ISCAS2013)

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This paper introduces a power and area efficient comb-based decimation structure, particularly suited for high values of decimation factors which are a power of two. The proposed topology has two stages, where the first stage is in a non-recursive form and the second one is in a recursive form (CIC filter). Moreover, a slight modification of the proposed decimator structure is presented in order to obtain an improved alias rejection. Simulation results are shown to validate the proposed approach.I.

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“…Due to its simplicity, the most popular decimation filter is the comb filter [3]. Its nonrecursive structure has high speed and requires low power consumption [4]- [5]. Considering a decimation factor which can be expressed as power of two 2 , the transfer function is:…”

Section: Introductionmentioning

confidence: 99%

Zero-rotation-based nonrecursive comb structure

Bahena

Dolecek

2014

2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS)

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This paper presents a comb-based nonrecursive decimation structure with improved magnitude characteristics, where the decimation factor M is a power of two. A rotated cosine filter is introduced to increase the attenuation in the folding bands. Additionally, the passband droop is decreased by using a simple multiplierless compensation filter which works at low rate. The multiplierless rotated term is also introduced. The method is illustrated with examples and the comparisons with other methods are provided.

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Power estimation of recursive and non-recursive CIC filters implemented in deep-submicron technology

Cited by 17 publications

References 6 publications

Decimation filters for high-speed delta-sigma modulators with passband constraints: General versus CIC-based FIR filters

Decimation filters for high-speed delta-sigma modulators with passband constraints: General versus CIC-based FIR filters

Power and area efficient comb-based decimator for Sigma-Delta ADCs with high decimation factors

Zero-rotation-based nonrecursive comb structure

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