By Topic

Fully differential current-input CMOS amplifier front-end suppressing mixed signal substrate noise for optoelectronic applications

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

6 Author(s)
J. J. Chang ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Myunghee Lee ; Sungyong Jung ; M. A. Brooke
more authors

In recent optoelectronic communication systems, microprocessors tend to be imbedded on-chip with analog interface circuitry. This results in a critical substrate noise issues for mixed-signal chip designers because switching transients in digital MOS circuits can interfere with analog circuits integrated on the same die by means of coupling through the substrate. In order to optimize the dynamic range of the system and to minimize the sensitivity to substrate noise, many noise-reduction techniques, such as a P+ guard ring, a N-well guard ring, trench oxide isolation, and MOSCAP have been developed and employed to suppress substrate noise generated by clocking of the digital circuitry in microprocessor. In this paper, a fully differential method is described, which is used to reduce the substrate noise effect caused by the microprocessor. This approach has been implemented in a communications data processing application, in which the microprocessor is located next to the analog current-input optical data receiver and quantization circuits which have a sensitivity of -28 dBm and variable gain characteristic for power efficiency. Both simulated and experimental results of this design approach are presented herein

Published in:

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on  (Volume:1 )

Date of Conference:

Jul 1999