A 1.5V 20/30 Gb/s CMOS backplane driver with digital pre-emphasis

Author

Westergaard, Paul ; Dickson, Timothy O. ; Voinigescu, Sorin P.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

fYear

2004

fDate

3-6 Oct. 2004

Firstpage

23

Lastpage

26

Abstract

A high-speed input comparator and output driver with adjustable pre-emphasis for applications in serial interchip communications over backplanes at 20 Gb/s is presented. The circuit was implemented in 130-nm CMOS and consumes 140 mW from a 1.5-V supply. It has over 30 dB dynamic range with a sensitivity of 20 mVp-p and a differential output swing of 700 mVp-p at 20 Gb/s. The output driver features a novel digital pre-emphasis circuit with independent pulse height and width control. Other features include 30%-70% eye-crossing control and adjustable output swing between 170 mVp-p and 350 mVp-p per side at data rates up to 30 Gb/s.

Keywords

CMOS integrated circuits; comparators (circuits); driver circuits; 1.5 V; 130 nm; 140 mW; 170 to 350 mV; 20 mV; 20 to 30 Gbit/s; 700 mV; CMOS backplane driver; adjustable digital pre-emphasis; differential output swing; eye-crossing control; high-speed input comparator; high-speed output driver; independent pulse height/width control; serial inter-chip communication; Backplanes; Circuits; Current density; Delay; Impedance matching; MOSFETs; Network topology; Pulse width modulation inverters; Resistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2004. Proceedings of the IEEE 2004

Print_ISBN

0-7803-8495-4

Type

conf

DOI

10.1109/CICC.2004.1358724

Filename

1358724