The source driver has been qualified and certified by the U.S. Defense Logistics Agency (DLA) as Qualified Manufacturers List (QML) Class V and Q, with four Standard Microcircuits Drawings (SMDs) listed, is in production.
Offered in two package types with screening options, the device has met the key requirements to operate in space environments, as the qualifications are mandatory for design-ins for space programs and for manufacturers to be listed on the QML by the DLA.
Microsemi's high-performance AAHS298B source driver provides an interface between spacecraft bus electronics and other subsystems, with the highest output source current for space applications requiring radiation tolerance.
Command signal outputs from the spacecraft's digital control electronics are typically TTL (5 volt) (V), CMOS (3 volt) and high-level (12 volt) logic and are not directly compatible with users' command input requirements.
These user requirements occur in payload, power, thermal, and housekeeping subsystems and range between 14 volt and 45 volt. The AAHS298B is an interface between these systems, providing a continuous 700 milliamps current to switched high side-drivers on the output.
The integration of eight non-inverting high side channels gives satellite designers reduced weight, resulting in smaller board space, and higher reliability as compared to discrete implementations.
As many satellite manufacturers and projects require the DLA QML certifications and listings as assurance the product meets Military Performance Specification (MIL-PRF) requirements, the AAHS298B meets these standards as part of the company's growing portfolio of mixed signal integrated circuits for demanding space applications.
For more information contact Microsemi online at www.microsemi.com.
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