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A 500Mb/s 200pJ/b die-to-die bidirectional link with 24kV surge isolation and 50kV/µs CMR using resonant inductive coupling in 0.18µm CMOS
Published in Institute of Electrical and Electronics Engineers Inc.
2017
Volume: 60
   
Pages: 434 - 435
Abstract
Chip based digital isolators are being developed for higher speed and higher isolation capabilities [1, 2]. These make use of various coupling mechanisms such as capacitive coupling [3] and transformer coupling [4]. A limitation of these technologies is that they need to maintain a low separation (distance through insulation DTI<30μm) through high quality insulators (oxides, polyamides) in order to achieve data rate and isolation performance [2]. These require expensive special process development and special packaging techniques to meet reinforced isolation recommended by IEC 60747-5-5 and VDE 0884-10. Other high-speed die-to-die communication techniques implemented using millimeter-wave and optical solutions are expensive and not designed for isolation. In this work, an isolation technique is proposed where two standard 180nm CMOS dies placed side by side with DTI of more than 500μm, and co-packaged using regular planar MCM flow with package mold compound being the isolation material, achieve asynchronous bidirectional link with >24kV surge isolation capability and greater than 500Mb/s at 175pJ/b. Channel gain is maximized using resonance. Gain is decoupled from channel bandwidth by resetting the channel state variables. This helps in enhancing data rate well beyond what is implied by the bandwidth. © 2017 IEEE.
About the journal
JournalData powered by TypesetDigest of Technical Papers - IEEE International Solid-State Circuits Conference
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN01936530
Open AccessNo
Concepts (16)
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    Bandwidth
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    Cmos integrated circuits
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    Electromagnetic coupling
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    Electromagnetic induction
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    Millimeter waves
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    Optical communication
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    TENSORS
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    BI-DIRECTIONAL LINKS
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    CAPACITIVE COUPLINGS
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    COMMUNICATION TECHNIQUES
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    ISOLATION PERFORMANCE
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    ISOLATION TECHNIQUES
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    PACKAGING TECHNIQUES
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    RESONANT INDUCTIVE COUPLINGS
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    TRANSFORMER COUPLING
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    Dies