RSFQ technique for generation of ultra-fast pulse chains having controlled and variable time-domain parameters

A novel RSFQ circuit allowing the generation of an SFQ pulse chain containing a fixed number of pulses and precisely controlled picosecond variable time interval between them is presented. The generation of such SFQ pulse chains is necessary in many applications, but especially by the high-speed on-chip testing of RSFQ digital devices. The proposed circuit can be extended to a generator of an ultra high-speed rectangular voltage pulses with controlled and variable duration, suitable for readout by the conventional semiconductor electronics. Thus, an ultra high-speed digital data generation can be performed.