DocumentCode :
886847
Title :
High-speed low-power AC-coupled complementary push-pull ECL circuit
Author :
Chuang, C.T. ; Tang, D.D.
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Volume :
27
Issue :
4
fYear :
1992
fDate :
4/1/1992 12:00:00 AM
Firstpage :
660
Lastpage :
663
Abstract :
A high-speed, low-power, AC-coupled complementary push-pull ECL (AC-PP-ECL) circuit is presented. The circuit utilizes two capacitors to couple a transient voltage pulse from the common-emitter node of the switching transistors to the bases of a pair of complementary p-n-p/n-p-n push-pull transistors to provide a large transient current during switching. In addition to a reduction of the power consumption and improvement in the pull-up and pull-down capability of the output stage, the circuit scheme completely decouples the collector load resistor Rc from the delay path, thus allowing a very small switching current to be used for the logic (current switch) stage without degrading the performance. Based on a 0.8-μm double-poly self-aligned complementary bipolar process at a power consumption of 0.5 mW/gate, the circuit offers 2.1× improvement in both the speed and load driving capability for a loaded gate compared with the conventional ECL circuit. The design and scaling considerations of the circuit are discussed
Keywords :
bipolar integrated circuits; emitter-coupled logic; integrated logic circuits; 0.5 mW; 0.8 micron; AC-coupled; common-emitter node; complementary bipolar process; complementary push-pull ECL circuit; double-poly self-aligned; high-speed; load driving capability; low-power; scaling considerations; transient current; transient voltage pulse; Coupling circuits; Delay; Energy consumption; Logic circuits; Pulse circuits; Resistors; Switched capacitor circuits; Switches; Switching circuits; Voltage;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/4.126558
Filename :
126558
Link To Document :
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