NDLI: Improved unity-STF sturdy MASH ΣΔ modulator for low-power wideband applications

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Improved unity-STF sturdy MASH ΣΔ modulator for low-power wideband applications

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Improved unity-STF sturdy MASH ΣΔ modulator for low-power wideband applications

Content Provider	IET Digital Library
Author	Taghizadeh, M. Sadughi, S.
Abstract	A novel sturdy multi-stage noise-shaping sigma–delta modulator that cancels the first-stage quantisation error at the output of the modulator is presented. Since any stage of the modulator has unity signal transfer function, the modulator would be very robust to circuit non-idealities such as finite op-amp gain. Furthermore, the signal processing timing issue in the critical paths of the proposed topology has been relaxed due to shifting the delay of the last integrator to the feedback path of the modulator. Moreover, this topology can be implemented in the circuit level by a fewer active blocks. Therefore, it practically would be suitable for low-voltage and low-oversampling applications. Simulation results show the usefulness of the proposed modulator.
Starting Page	1941
Ending Page	1942
Page Count	2
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 23, Nov (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/23
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2015.1976
Journal	Electronics Letters
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A/D And D/A Convertor Circuit Feedback Circuit Nonideality Finite Op-amp Gain Integrated Circuit Design Integrator Low Power Electronics Low-oversampling Application Low-power Wideband Application Modulator Modulator Feedback Path Multistage Noise-shaping Sigma–delta Modulator Quantisation Error Sigma-delta Modulation Signal Processing Timing Issue Signal Transfer Function Transfer Function Unity-STF Sturdy MASH ΣΔ Modulator
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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