Aeroflex Colorado Springs Inc.

Derek E Bass

John Pfeil

A PLL fail-over circuit technique and method to mitigate the effects of single-event transients comprises providing a pair of substantially identical phase-locked loops and producing a respective delayed clock signal from each. The outputs of the phase-locked loops are monitored for errors comprising high frequency transients or differences in clock signal outputs from a reference frequency. A clock out signal is output representative of the first delayed clock signal if an error is detected in the second phase-locked loop and the second delayed clock signal is output if an error is detected in the first phase-locked loop.

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Castle Rock, CO, United States of America

Derek E Bass