Title :
Modified feedback ECL gate for Gb/s applications
Author :
Ramakrishnan, Vinodkumar ; Albers, Jens N. ; Nottenburg, Richard N.
Author_Institution :
Hewlett-Packard Co., Palo Alto, CA, USA
fDate :
2/1/1999 12:00:00 AM
Abstract :
This paper introduces a modification of the feedback emitter-coupled logic (FECL) gate that makes it suitable for Gb/s applications. The circuit can be used as a single-ended-to-differential signal converter without the need for an external reference voltage and finds application in digital optical links in which data is typically transmitted single ended. The gate is compared with FECL and ECL gates, and its application to realize logic functions is discussed. A 6-Gb/s series gated decision circuit and a 2-Gbaud/s four-channel optical receiver array employing modified FECL gates are also described
Keywords :
bipolar logic circuits; circuit feedback; convertors; decision circuits; emitter-coupled logic; high-speed integrated circuits; logic gates; optical receivers; 6 Gbit/s; Gb/s applications; digital optical links; emitter-coupled logic; four-channel optical receiver array; logic functions; modified feedback ECL gate; series gated decision circuit; single-ended-to-differential signal converter; High speed optical techniques; Logic arrays; Logic circuits; Logic gates; Optical arrays; Optical feedback; Optical fiber communication; Optical receivers; Switching circuits; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
