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A 96.4 dB High-Pass Delta-Sigma Modulator with Dynamic Biasing and Tree-Structured DEM
KTH, School of Information and Communication Technology (ICT), Elektronics, Integrated devices and circuits.
KTH, School of Information and Communication Technology (ICT), Elektronics, Integrated devices and circuits.
KTH, School of Information and Communication Technology (ICT), Elektronics, Integrated devices and circuits.ORCID iD: 0000-0003-3802-7834
2016 (English)In: 2016 14TH IEEE INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS), Vancouver, Canada: IEEE, 2016, article id 7604762Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a switched-capacitor high-pass delta-sigma modulator that can directly convert a chopper modulated signal to the digital domain. Low power consumption is achieved by employing inverter-based amplifiers and dynamic biasing in the first amplifier with relaxed slew-rate requirements as a result of the multi-bit quantization. The mismatch errors in the switched-capacitor DAC are first-order noise shaped by a tree-structured dynamic element matching encoder. Schematic level simulations show that the high-pass modulator achieves a peak SNDR of 96.4 dB and a SFDR of 101 dBc over a bandwidth of 300 Hz. The total estimated power consumption of the modulator is 19.56 mu W leading to a figure-of-merit of 0.6 pJ/conv.

Place, publisher, year, edition, pages
Vancouver, Canada: IEEE, 2016. article id 7604762
Series
IEEE International New Circuits and Systems Conference
Keywords [en]
delta-sigma, ADC, modulator, switched-capacitor, DEM, dynamic, element, matching
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-198993DOI: 10.1109/NEWCAS.2016.7604762ISI: 000386900400028Scopus ID: 2-s2.0-84999014708ISBN: 978-1-4673-8900-6 (print)OAI: oai:DiVA.org:kth-198993DiVA, id: diva2:1065726
Conference
14th IEEE International New Circuits and Systems Conference (NEWCAS), JUN 26-29, 2016, Vancouver, CANADA
Funder
Swedish Research Council
Note

QC 20170116

Available from: 2017-01-16 Created: 2016-12-22 Last updated: 2017-01-25Bibliographically approved

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