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IEICE TRANSACTIONS on Electronics

Resonant Power Supply Noise Reduction by STO Capacitors Fabricated on Interposer

Toru NAKURA, Masahiro KANO, Masamitsu YOSHIZAWA, Atsunori HATTORI, Kunihiro ASADA

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Summary :

This paper demonstrates the resonant power supply noise reduction effects of STO thin film decoupling capacitors, which are embedded in interposers. The on-interposer STO capacitor consists of SrTiO2 whose dielectric constant is about 20 and is sandwitched by Cu films in an interposer. The on-interposer STO capacitors are directly connected to the LSI PADs so that they provide large decoupling capacitance without package leadframe/bonding wire inductance, resulting in the reduction of the resonant power supply noise. The measured power supply waveforms show significant reduction of the power supply noise, and the Shmoo plots also show the contribution of the STO capacitors to the robust operations of LSIs.

Publication
IEICE TRANSACTIONS on Electronics Vol.E98-C No.7 pp.734-740
Publication Date
2015/07/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E98.C.734
Type of Manuscript
PAPER
Category
Electronic Circuits

Authors

Toru NAKURA
  The University of Tokyo
Masahiro KANO
  The University of Tokyo
Masamitsu YOSHIZAWA
  Noda Screen Co. Ltd.
Atsunori HATTORI
  Noda Screen Co. Ltd.
Kunihiro ASADA
  The University of Tokyo

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