An Ultra-Low Power, Radiation Tolerant, High Speed Correlator
نویسندگان
چکیده
A digital high-speed cross-correlator (HSCC) has been developed for use in a microwave polarimetry instrument. The HSCC incorporates radiation tolerant circuit design and an ultra-low power CMOS process. In order to meet the very high input data requirement of 500 megasamples per second the correlator architecture was partitioned into different sections, each with its own trade-off requirements for the maximum operating frequency and degree of radiation tolerance. An ultra-low power, radiation tolerant, standard cell library was created to allow commercial design tools and methods to be used for the integrated circuit design. These tools made it possible to synthesize the gate-level circuits from behavioral models and also to automatically generate layouts for circuit modules. Level-shifting interface circuits were developed to allow the correlator to communicate with conventional digital circuits using a 3.3 volt power supply while the correlator core operated with a supply voltage of 0.5 volts. Preliminary test results indicate that the correlator functions properly for clock frequencies of several hundred megahertz with milliwatts of power consumption.
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تاریخ انتشار 2003