A 7-tap transverse analog-FIR filter in 0.12 /spl mu/m CMOS for equalization of 10Gb/s fiber-optic data systems

A 130mA 2.5V 7-tap analog FIR equalizer for 10Gb/s fiber-optic links is implemented in a 0.12 /spl mu/m CMOS process. The filter precedes the receiver CDR and recovers data signals distorted by multi-mode fiber dispersion over a 600m link to a BER <10/sup -12/. Tap delays are implemented by a combination of passive and buffered LC transmission lines.

[1]  S. Gowda,et al.  Differential 4-tap and 7-tap transverse filters in SiGe for 10Gb/s multimode fiber optic link equalization , 2003, 2003 IEEE International Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC..

[2]  Ali Hajimiri,et al.  Integrated transversal equalizers in high-speed fiber-optic systems , 2003, IEEE J. Solid State Circuits.

[3]  A.P. Freundorfer,et al.  MMIC adaptive transversal filtering using Gilbert cells and is suitable for high-speed lightwave systems , 2000, IEEE Photonics Technology Letters.