A 16-port FCC-compliant 10GBase-T transmitter and hybrid with 76dBc SFDR up to 400MHz scalable to 48 ports

High-density 48-port network switches demand very power-efficient, small form-factor quad PHYs which comply with the IEEE 802.3an transmit PSD and return-loss requirements on the one hand and meet the FCC Class-A specifications on the other hand. We present a 10GBase-T transmitter and hybrid that us...

Full description

Saved in:
Bibliographic Details
Main Authors: Gerfers, F., Farjad, R., Brown, M., Tavakoli, A., Nguyen, D., Hiok-Tiaq Ng, Shirani, R.
Format: Conference Proceeding
Language:English
Subjects:
CMOS integrated circuits
Echo cancellers
Electromagnetic interference
Impedance
Optical transmitters
Radio frequency
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High-density 48-port network switches demand very power-efficient, small form-factor quad PHYs which comply with the IEEE 802.3an transmit PSD and return-loss requirements on the one hand and meet the FCC Class-A specifications on the other hand. We present a 10GBase-T transmitter and hybrid that uses a highly correlated current-mirroring amplifier with output rise time control and high CMRR to perform a first-order linear and non-linear echo cancellation while enabling the design of 48-port FCC compliant network switches. Experimental results over the 400MHz bandwidth exhibit a transmitter linearity of >;57dBc as well as a residual linear echo and distortion of -28dBc and 76dBc, respectively. Implemented in a 40nm CMOS technology, the transmitter plus hybrid consumes 200mW power and occupies 0.5mm 2 .
ISSN:0193-6530
2376-8606
DOI:10.1109/ISSCC.2012.6177069