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Following are a few of our technical papers which will provide more detailed information about some of our products and the technology that makes them possible.
Please note: These papers are in Adobe
PDF format. To view them you will need the free Adobe Reader software
installed on your computer. If you do not have it installed currently, you
can download the correct version here.
Compendia of TID and SEE Test Results of Space Qualified
Integrated Circuits
Presented at NSREC 2003, this paper examines
SEE and TID data taken for existing and potential space products. The data
was collected to evaluate these devices for radiation effects in space environments.
TID Performance Degradation of High Precision, 16-bit
Analog-to-Digital Converter
Presented at NSREC 2003, this paper examines the test data and analysis from
three 16-bit analog-to-digital (A/D) converters that were evaluated for performance
and linearity degradation due to the total dose induced shifts in the voltage
reference.
Designing A Single Board Computer For Space Using The Most Advanced
Processor and Mitigation Technologies
As high-end computing becomes more of a necessity in space, there currently exists
a large gap between what is available to satellite manufacturers and the state
of the commercial processor industry. As a result, Maxwell Technologies has developed
a Super Computer for Space that utilizes a combination of the latest commercial
Silicon-on-Insulator PowerPC processors, state-of-the-art memory modules and
radiation tolerant FPGA's to achieve space-qualified performance that is from
10 to 1000 times that of current technology. In addition, Maxwell's Super Computer
for Space (SCS750) SBC is capable of executing up to 1800+ millions of instruction
per second (MIPS), while guaranteeing upset rates for the entire board of less
then 1 every 1000 years. Presented is a brief synopsis of Maxwell's single board
computer design approach , radiation mitigation techniques and radiation test
results employed on Maxwell's next generation super computer for space.
256 Megabit SDRAM Single Event Effects and Total Ionizing Dose Testing
256 Megabit SDRAM’s are advanced memories with internal state machines and functions that make testing and understanding the resultant radiation effects complicated. In this paper, we present results and methodologies for single event effects (SEE) and total ionizing dose (TID) testing.
How Rad Hard Do You Need? The Changing
Approach to Space Parts Selection
Traditional radiation hardened or "rad hard" parts are generally considered to be capable of withstanding the most severe space environments. In fact, these devices are designed and fabricated with the specific goal of enduring the harshest space radiation environments. And while they have tremendous radiation capabilities, these parts are more expensive and less advanced that today's commercially available components. As a result, the main customers for these ICs have generally been well-funded military and scientific entities. However, a migration from traditional rad hard components is currently underway, thanks to the commercialization of space.
Proton Transport: An examination of model
and experimental data for space environments
Presented by Phil Layton at RADECS 1999, this paper examines modeling data for various orbits using modeling software (Space Radiation 4.0, SEA, and TRIM) and compare this with actual satellite flight results. In particular, we will discuss the effectiveness of shielding components from total ionizing dose due to trapped protons.
Single
Event Latch-up Protection Of Integrated Circuits
This paper reports the test results from the development
of the single event latch-up protection circuitry (referred to as Maxwell Technologies
LPT™ technology) for several integrated circuits which are known to latch-up
at unacceptably low LET energies for space applications. Two devices were evaluated
with LPT; the ADS7805 16 bit analog to digital converter and the GF10009 FPGA
(Gatefield’s 9000 gate flash programmable gate array).
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