A 90-nm radiation hardened clock spine

Srivatsan Chellappa, Lawrence T. Clark, Keith Holbert

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A RHBD clock distribution network is described that reliably synchronizes the flow of signals through an integrated circuit in the presence of SETs. The clock spine design controls both redundant and non-redundant hardened circuits. The design uses techniques to reduce the jitter due to SETs, as well as error detection at every clock edge, since errors may be in the clock gating enables rather than the clocks themselves. The clock spine has been fabricated and tested on both standard and a low power 90-nm test chips, and proven hard as demonstrated by both heavy ion and proton broad beam testing.

Original languageEnglish (US)
Article number6172202
Pages (from-to)1020-1026
Number of pages7
JournalIEEE Transactions on Nuclear Science
Issue number4 PART 1
StatePublished - 2012


  • Clock generation
  • radiation hardening by design
  • single event transients
  • single event upset

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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