NASA Office of Logic Design

A scientific study of the problems of digital engineering for space flight systems,
with a view to their practical solution.

RTAX-S Sample I_CC Data

OLD News #18, "New FPGA Technologies: Currents, Voltages, and Temperatures," described in part the increase in standby currents for some of the new FPGA technologies.  This note will present some sample RTAX-S I_CCA and I_CCI data.

Two devices were selected from two different wafer lots.  As can be seen from the charts below, there is considerable variability in the data from part to part.  Each device was programmed with Actel "ELA design" and the temperatures reported are device ambient temperatures, not junction temperatures.  All FPGAs were in CQ253 packages.

It is clear that for many missions the standby currents will be considerably less than the specification limit since the ambient temperatures will be considerably lower then 125 ºC.

Figure 1.  Sample RTAX2000S I_CCA data.

 

Figure 2.  Sample RTAX2000S I_CCI data.

 

RTAX-S and AX Application Notes

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