ALISO VIEJO, Calif. – Holt Integrated Circuits in Aliso Viejo, Calif., is introducing the ADK-25850FMC-2 dual-channel MIL-STD-1553 mezzanine card for avionics networking applications.
The ADK-25850FMC-2 development kit is a dual channel MIL-STD-1553 FPGA mezzanine card (FMC) reference design using standard IAW VITA 57.1 form factor. It features the HI-25850 3.3-volt MIL-STD-1553 dual transceiver with integrated transformers.
The transformers are configured to provide a transformer-coupled MIL-STD-1553 interface. Integration of the transformers in the IC package provides significant board space saving.
The card interfaces to a host or FPGA using FMC connectors or two PMOD headers. The HI-25850 transceivers support digital I/O of 1.8 volts, 2.5 volts, or 3.3 volts, enabling more flexibility for host or FPGA selection, and are MIL-STD-1553A/B/C, MIL-STD-1760, SAE AS15531A and STANAG 3838 compliant.
The card provides jumpers and DIP switches to demonstrate the capabilities of the HI-25850. For example, the device features tail-off compensation, which minimizes output offset caused by timing mismatch or transmit signal path propagation differences resulting from board layout.
This may be done in two ways, by input data synchronization or by applying a fixed offset to the output via three digital inputs.
The HI-25850 transceiver also features an optional receive output pulse extension. When this feature is enabled, receiver output pulse widths do not drop below 180 nanoseconds, greatly simplifying decoder design and enhancing noise performance.
A single-channel version, ADK-25850FMC-1, provides a single dual redundant MIL-STD-1553 interface, also is available. For more information contact Holt Integrated Circuits online at www.holtic.com.
