Title :
Towards broadband communications between RSFQ chips
Author :
Polonsky, S. ; Schneider, D.
Author_Institution :
Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
We have investigated the applicability of Single Flux Quantum (SFQ) and Multiple Flux Quanta (MFQ) approaches to communications between RSFQ logic/memory chips. SFQ pulses can be transmitted between chips if inductive discontinuity L lies below 3-5 pH. For larger L one can employ MFQ pulses which have the same width as the SFQ pulses, but M times larger amplitude. For example, for L=20 pH, M=4 is sufficient. We have developed an MFQ driver and a receiver capable of transmitting the data in 10-20 Gbps/pin range for the use in simple flip-chip MCM packages based on Si substrates.
Keywords :
delays; driver circuits; integrated circuit packaging; multichip modules; superconducting logic circuits; superconducting memory circuits; 10 to 20 Gbit/s; MFQ driver; MFQ receiver; RSFQ chips; broadband communications; flip-chip MCM packages; inductive discontinuity; logic chips; memory chips; multiple flux quanta; single flux quantum; Broadband communication; Delay effects; Delay estimation; Driver circuits; Electronics packaging; Impedance; Josephson junctions; Microstrip; Semiconductor device packaging; Superconducting transmission lines;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
