49-Gb/s, 7-tap transversal filter in 0.18 μm SiGe BiCMOS for backplane equalization

Author

Hazneci, Altan ; Voinigescu, Sorin P.

Author_Institution

Edward S. Rogers, Sr. Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

101

Lastpage

104

Abstract

This paper describes the first integrated transversal filter for feed-forward equalizers (FFE) operating above 40 Gb/s. Equalization of a 2³¹-1 PRBS over a 9-ft and 6.5-ft cable with SMA connectors is demonstrated on-wafer at 40 Gb/s and 49 Gb/s respectively. The circuit is implemented in a commercial 0.18 μm SiGe BiCMOS process and is based on a differential distributed 7-tap fractionally spaced transversal filter topology. Microstrip transmission lines are employed as delay elements. With input and output return loss better than -10 dB up to 55 GHz, and a 1 × 2 mm² die area, the circuit draws 150 mA from a single 5-V supply.

Keywords

BiCMOS integrated circuits; Ge-Si alloys; electric connectors; elemental semiconductors; equalisers; feedforward; integrated circuit interconnections; microstrip lines; microwave integrated circuits; transversal filters; 0.18 micron; 150 mA; 40 Gbit/s; 49 Gbit/s; 5 V; 7-tap transversal filter; Gilbert cell; SMA connectors; SiGe; backplane equalization; commercial SiGe BiCMOS process; delay element; differential distributed 7-tap fractionally spaced transversal filter topology; feed-forward equalizers; microstrip transmission lines; Backplanes; BiCMOS integrated circuits; Circuit topology; Connectors; Equalizers; Feedforward systems; Germanium silicon alloys; Power cables; Silicon germanium; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Compound Semiconductor Integrated Circuit Symposium, 2004. IEEE

ISSN

1550-8781

Print_ISBN

0-7803-8616-7

Type

conf

DOI

10.1109/CSICS.2004.1392502

Filename

1392502