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High-Pass or Low-Pass Delta Sigma Modulators?

Abstract : In this paper, High-Pass (HP) Delta Sigma modulators are compared against the traditional Low-Pass (LP) modulators. The objective of this comparison is to point out the advantages and drawbacks of the two modulators thereby allowing to choose the most suited for a given application. The metrics of comparison are the noise floor, power consumption, surface area and the effect of the non-idealities of all the basic blocks (i-e Operational Transconductance Amplifier (OTA), Quantizer, Switches and Clocks). It turns out that HP modulators are more suited for narrow band applications because of their immunity against DC-offset and flicker noise. For medium and wide application, LP modulators are preferred because of their higher robustness against switch imperfections and clock jitter.
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https://hal.telecom-paris.fr/hal-02411845
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Submitted on : Sunday, December 15, 2019 - 12:34:33 PM
Last modification on : Friday, July 31, 2020 - 11:28:04 AM

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  • HAL Id : hal-02411845, version 1

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Chadi Jabbour, H. Khushk, V. T. Nguyen, P. Loumeau. High-Pass or Low-Pass Delta Sigma Modulators?. International Conference on Electronics, Circuits, and Systems (ICECS), Dec 2011, Beirut, Lebanon. ⟨hal-02411845⟩

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