An effective RSFQ implementation of a 1-bit all-digital
ultra-wide-band autocorrelator with double oversampling has been
developed. With 22 Josephson junctions per stage of the delay line
and 5 junctions in each of 10 low-power binary counters (the last of
which has 2 extra junctions for SFQ to DC conversion), it uses only
Josephson junctions per channel. Most of the
power is dissipated in the biasing resistors of the delay line,
resulting in consumption of only 
per stage. By lowering
the bias voltage this power can be further reduced to around 
per stage. We have successfully tested a 16-stage autocorrelator
delay line (alone and integrated with a 
array of
T flip-flops) at low frequencies and an array of 8 low-power
T flip-flop binary counters at frequencies of up to 
.