QLF08_LaBel.pdf - 第16页
IC and Component Selection for Space Sy stems – Presented by Kenneth A . LaBel 16 Radiation Perspective on IC Selection • From the radiation perspective, ICs can be viewed as one of four categories. – Guaranteed hardness…
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
15
Flight Program:
Typical Radiation Hardness Assurance (RHA) Flow
Environment
Definition
Project
Requirements
and
Specifications
Technology Hardness
Spacecraft or
Component
Mechanical
Modeling –
3D ray trace,
Monte Carlo,
NOVICE, etc.
Flight Program RHA Managed via Lead Radiation Engineer
Design Margins
External Environment
Environment in
the presence of
the spacecraft
Box/system Level
In-Flight
Evaluation
Technology
Performance
Anomaly
Resolution
Lessons
Learned
Design
Evaluation
Parts List Screening
Radiation
Characterizations,
Instrument
Calibration,
and Performance
Predictions
Mitigation
Approaches
and Design
Reliability
Iteration over project development cycle
Cradle to Grave!
IC and Component Selection for Space Systems – Presented by Kenneth A. LaBel
16
Radiation Perspective on IC Selection
• From the radiation perspective, ICs can be viewed
as one of four categories.
– Guaranteed hardness
• Radiation-hardened by process (RHBP)
• Radiation-hardened by design (RHBD)
– Historical ground-based radiation data
• Lot acceptance criteria
– Historical flight usage
• Statistical significance
– Unknown assurance
• New device or one with no data or guarantee
RHBD Voting Approach
http://www.aero.org/publications/crosslink/summer2003/06.html
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