Hmc853 flip flop output rise time

Hi Benjamin,

Is it possible to increase the voltage swings at D and C inputs. As the signal saturates, you should be able to get the sharp rise/fall edges. 550mVpp at D input(single ended) and 400mV at each clock input is the test condition. D and C inputs are also driven with 50ohms sources. Are your instrument's interface 50ohms, please verify.

Sinan

Hi, Salemdar,

    I added amplifiers and attenuators in the chain and tried several different amplitude combinations, as well as changing the phase between the two (sync'd) signals, but could only make the rise time longer.  Would you mind letting me know what instrument was used for the testing, and do the clock and data inputs be "squarish", or will sine wave work?

    Thanks again for the help!

Benjamin

Hi, these parts were characterized with a sampling scope and the probe head used had a bandwidth of 70GHz. This ensures the instrument does not limit the rise time measured. 

Hi, these parts were characterized with a sampling scope and the probe head used had a bandwidth of 70GHz. This ensures the instrument does not limit the rise time measured.