Satellites & Space Systems
DDC is a leading supplier of space qualified SBCs and radiation hardened components. Utilizing multiple radiation hardening techniques, DDC's space solutions incorporate one or more of the following elements: RAD-PAK® technology, Rad Hard by Design, Triple Mode Redundancy (TMR), and Error-Correction Codes (ECC). DDC's space-qualified and field proven solutions are engineered for space’s extreme environmental requirements, while reducing space, weight, and power consumption, along with total cost of ownership.
Radiation Hardening Techniques
Advanced Commercially-Available Components with RAD-PAK® Technology
DDC’s RAD-PAK® technology improves TID (Total Ionizing Dose) hardness by shielding the semiconductor die. RAD-PAK® enables the latest commercially-available electronic integrated circuits to be deployed on various space missions, by tailoring the shielding thickness to mitigate the specific space-radiation environment.
DDC’s product range for space includes...
• Interface logic
• Switches and Multiplexers
• A to D and D to A converters
• Nuclear Event Detectors
• Amplifiers and Comparators
Radiation Hardened by Design & Process
DDC has successfully deployed mixed-signal and digital ASICs on multiple space missions via its portfolio of MIL-STD-1553 interface, motion feedback, and motor control and drive solutions. To mitigate TID & SEE (Single Event Effects) these Multi-Chip Modules (MCMs) incorporate ICs employing the latest state-of-the-art rad-hard by design techniques, as well as modern dielectrically-isolated semiconductor processes. DDC selectively applies rad-hard libraries and or processes that are proven to be radiation hardened to optimize performance.
• Motor Controllers
• Motor Drives
• Synchro/Resolver to Digital Converters
• Reference Oscillators
• Bus Couplers
Triple Mode Redundancy (TMR) & Error-Correction Codes (ECC)
In our high-reliability subsystems, DDC employs TMR and ECC to mitigate TID & SEE. In both methods, failure-free operation is ensured by the use of redundancy. In the case of TMR, the output of three processors is run through a voting algorithm, and an error in one processor may then be “outvoted” by the other two processors. Additionally, incorrect data is resolved by applying Error Correction Codes and computing algorithms with redundant data-bits. With multiple error correction tools, the level of correction can be tailored to the severity of the environment.
• Single Board Computers