A comparison between high-pass and low-pass DR modulators

Chadi Jabbour; Hasham Khushk; Van Tam Nguyen; Patrick Loumeau

doi:10.1007/s10470-012-9920-x

A comparison between high-pass and low-pass DR modulators

Chadi Jabbour, Hasham Khushk, Van Tam Nguyen, Patrick Loumeau

CNRS LTCI

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, high-pass (HP) DR modulators are compared against the traditional low-pass (LP) DR modulators. The objective of this comparison is to point out the advantages and drawbacks of the two modulators thereby allowing choosing the most suited for a given application. The metrics of comparison are the noise floor, power consumption, area and the effect of the non-idealities of all the basic blocks (i.e., operational transconductance amplifier, quantizer, switches and clocks). The comparative analysis shows that HP modulators are more suited for narrow band applications because of their immunity against DC-offset and flicker noise. For medium and wide band applications, LP modulators are preferred because of their higher robustness against switch imperfections and clock jitter.

Original language	English
Pages (from-to)	629-641
Number of pages	13
Journal	Analog Integrated Circuits and Signal Processing
Volume	74
Issue number	3
DOIs	https://doi.org/10.1007/s10470-012-9920-x
Publication status	Published - 1 Mar 2013
Externally published	Yes

Keywords

Analog to digital converter
Delta sigma modulation
Offset and flicker noise
Switched capacitor circuits

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10.1007/s10470-012-9920-x

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abstract = "In this paper, high-pass (HP) DR modulators are compared against the traditional low-pass (LP) DR modulators. The objective of this comparison is to point out the advantages and drawbacks of the two modulators thereby allowing choosing the most suited for a given application. The metrics of comparison are the noise floor, power consumption, area and the effect of the non-idealities of all the basic blocks (i.e., operational transconductance amplifier, quantizer, switches and clocks). The comparative analysis shows that HP modulators are more suited for narrow band applications because of their immunity against DC-offset and flicker noise. For medium and wide band applications, LP modulators are preferred because of their higher robustness against switch imperfections and clock jitter.",

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AU - Loumeau, Patrick

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N2 - In this paper, high-pass (HP) DR modulators are compared against the traditional low-pass (LP) DR modulators. The objective of this comparison is to point out the advantages and drawbacks of the two modulators thereby allowing choosing the most suited for a given application. The metrics of comparison are the noise floor, power consumption, area and the effect of the non-idealities of all the basic blocks (i.e., operational transconductance amplifier, quantizer, switches and clocks). The comparative analysis shows that HP modulators are more suited for narrow band applications because of their immunity against DC-offset and flicker noise. For medium and wide band applications, LP modulators are preferred because of their higher robustness against switch imperfections and clock jitter.

AB - In this paper, high-pass (HP) DR modulators are compared against the traditional low-pass (LP) DR modulators. The objective of this comparison is to point out the advantages and drawbacks of the two modulators thereby allowing choosing the most suited for a given application. The metrics of comparison are the noise floor, power consumption, area and the effect of the non-idealities of all the basic blocks (i.e., operational transconductance amplifier, quantizer, switches and clocks). The comparative analysis shows that HP modulators are more suited for narrow band applications because of their immunity against DC-offset and flicker noise. For medium and wide band applications, LP modulators are preferred because of their higher robustness against switch imperfections and clock jitter.

KW - Analog to digital converter

KW - Delta sigma modulation

KW - Offset and flicker noise

KW - Switched capacitor circuits

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A comparison between high-pass and low-pass DR modulators

Abstract

Keywords

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