By Topic

A CMOS 18 THzΩ 248 Mb/s transimpedance amplifier and 155 Mb/s LED-driver for low cost optical fiber links

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
M. Ingels ; ESAT-MICAS, Katholieke Univ., Heverlee, Belgium ; G. Van Der Plas ; J. Crols ; M. Steyaert

The realization of a complete low cost CMOS optical fiber link using a LED and PIN as optical components is presented. The driver and receiver are realized in a standard 0.8 μm digital CMOS process which makes integration with a DSP possible. The driver is a current steering transistor combined with a small quiescent current source. The modulation current is 60 mA which allows a 155 Mb/s optical data-rate. The receiver is a three-stage transimpedance amplifier followed by a signal converter which provides digital output signal levels. The three-stage configuration makes possible the realization of a high transimpedance (150 kΩ), necessary to obtain a high sensitivity, combined with a high bandwidth. The achieved optical data-rate is 240 Mb/s for 1 μA input modulation currents. This results in a transimpedance bandwidth of 18 THzΩ, which is one order of magnitude higher than recently published circuits. The speed performance of the total link is limited by the optical time-constant of the LED, leading to a 155 Mb/s optical link, designed for use in four-fiber interboard connections in 622 Mb/s B-ISDN systems

Published in:

IEEE Journal of Solid-State Circuits  (Volume:29 ,  Issue: 12 )