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Intersil releases 1-chip Rad Hard 32-channel driver for Satellite applications

Date: 20/03/2017
Intersil Corporation has introduced ISL72813SEH radiation hardened 32-channel driver with integrated decoder that reduces the size, weight and power (SWaP) of satellite command and telemetry systems. The high current driver integrates the decoder, level shifter and driver array in a single monolithic IC which allows satellite manufacturers to increase system capacity and reduce solution size by up to 50%. The device offers a 4x higher density channel count compared to the nearest competitor, and the integrated level shifter eliminates several peripheral components.

The ISL72813SEH driver leverages Intersil's proprietary silicon on insulator process, which provides single-event latch-up (SEL) robustness in heavy ion environments. The driver's integrated decoder interfaces directly to the general purpose I/Os of FPGAs and CPUs in the satellite's flight computer. The device addresses latching relay and solenoid commanding for most satellite control functions, including redundancy management, mechanism drive enables, propulsion component relays and enables, battery management, and payload switch control.

"The ISL72813SEH gives our space customers like Orbital ATK the integration and performance they need for cutting edge military and commercial space applications," said Philip Chesley, senior vice president of Precision Products at Intersil. "The mass and power savings our rad hard devices deliver play a critical role in Orbital ATK's next generation satellites."

Key features and specifications:

Acceptance tested to 50krad(Si) LDR, wafer-by-wafer
Integrated 5-bit to 32-channel decoder and level shifting circuit
High collector current outputs to 600mA
Low VCE saturation of 1.5V with IC of 530mA
High voltage outputs up to -40V
VCC supply range of 3V to 5.5V
Extended operating temperature range of -55 Deg Cel to +125 Deg Cel
HDR radiation tolerance of 100krad(Si) and LDR of 50krad(Si)
SEB LETTH (VCE = 33V) immune up to 86.4MeV cm2/mg

Complete satellite command and telemetry signal processing solution can be developed when the ISL72813SEH is combined with the following ICs:

ISL71841SEH 32-channel 30V multiplexer,
ISL70444SEH, ISL70244SEH, ISL70419SEH and ISL70219ASEH precision op amps,
ISL71090SEH and ISL71091SEH low-noise voltage references,
ISL70517SEH and ISL70617SEH differential input in-amps,
ISL71590SEH temperature sensor, and
ISL7202xSEH CAN transceivers


The ISL72813SEH driver is available now in a 44-lead ceramic lead-less chip carrier (CLCC) package. An evaluation board, SEE and total dose testing reports are also are available.