The Washington Correlator

A Mark IV Correlator Chip

A single Mark IV correlator chip contains approximately 1,000,000 transistors! The chip is divided into 16 interconnected correlator sections of 32 lags each, plus 8 independent phase generators, rotators, and delay management sections, all operating at up to 64 MHz. This chip will be used to support several major correlator projects worldwide. Chip design was done at the MIT Haystack Observatory and the NASA/SERC center at the University of New Mexico. Fabrication was done by Hewlett-Packard using a 0.8 micrometer CMOS process.

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