QLF08_LaBel.pdf - 第18页
IC and Component Selection for Space Sy stems – Presented by Kenneth A . LaBel 18 Archival Radiation Performance – Ground-based Data • Reviewing existing ground radiation test data on a IC and it’ s application has been …
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
17
“Guaranteed” Radiation Tolerance
• A limited number of semiconductor manufacturers,
either with fabs or fabless, will guarantee radiation
performance of devices
– Examples:
• ATMEL, Honeywell, BAE Systems, Aeroflex
– Radiation qualification usually is performed on either
• Qualification test vehicle,
• Device type or family member, or
• Lot qualification
– Some vendors sell “guaranteed” radiation tolerant devices
by “cherry-picking” commercial devices coupled with
mitigation approaches external to the die
• The devices themselves can be hardened via
– Process or material (RHBP or RHBM),
– Design (RHBD), or
– Serendipity (RHBS)
Most radiation tolerant foundries use a
mix of hardening approaches
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
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Archival Radiation Performance –
Ground-based Data
• Reviewing existing ground radiation test data on a IC and
it’s application has been discussed previously
– For example. Christian Poivey at NSREC Short Course in 2002
– Using a “similar” device with data is risky, but sometimes
considered (though not recommended)
• In general, the flow is shown below
Does data
exist?
Same
wafer lot?
Sufficient
test data?
Test method
applicable?
Has
process/foundry
changed?
YES
NO
Test recommended but may be
waived based on risk
assumption
NO
YES
Data usable
YES
Test
Test
YES
NO
NO
NO
YES
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
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Archival Radiation Performance –
Flight Heritage
• Can we make use of parts with
flight heritage and no ground
data for new mission?
• Similar flow to using archival
ground data exist, but consider
as well
– Statistical significance of the
flight data
• Environment severity?
• Number of samples?
• Length of mission?
– Has storage of devices affected
radiation tolerance or reliability?
– And so forth
• This approach is rarely
recommended by the radiation
experts
Some heritage designs last
better than others