S93031 phase modulator MMIC DC lifetest

A 1000-hour DC lifetest was performed on ten S93031 MMIC phase modulators at a temperature of 125/spl deg/C. The criterion for failure was a 50% change in supply current. None of the ten devices tested failed the DC test. The RF performance of the devices was measured before and after the test, and showed little or no change in device performance.