A 50-Gb/s differential transimpedance amplifier in 65nm CMOS technology

A 50-Gb/s differential transimpedance amplifier is realized in a standard 65nm CMOS process, which exploits asymmetric transformer peaking technique for bandwidth extension and employs a modified regulated-cascode input stage with a shunt-feedback common-source amplifier for differential signaling. Measured results demonstrate 52-dBΩ transimpedance gain, 50-GHz bandwidth for 50fF photodiode capacitance, -12.3dBm sensitivity for 10-12 BER, and 49.2-mW power dissipation from a single 1.2-V supply. To the best of authors' knowledge, this chip achieves the fastest operation speed among the recently reported gigabit CMOS transimpedance amplifiers. The chip occupies the total area of 1.2×0.8mm2 including pad.

[1]  Tim Moran,et al.  A quad 25Gb/s 270mW TIA in 0.13µm BiCMOS with <0.15dB crosstalk penalty , 2013, 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers.

[2]  Jun-De Jin,et al.  A Miniaturized 70-GHz Broadband Amplifier in 0.13- m CMOS Technology , 2008 .

[3]  Joohwa Kim,et al.  A 40-Gb/s Optical Transceiver Front-End in 45 nm SOI CMOS , 2012, IEEE Journal of Solid-State Circuits.

[4]  Eduard Säckinger.  Broadband Circuits for Optical Fiber Communication: Säckinger/Broadband , 2005 .

[5]  Dan Li,et al.  A Low-Noise Design Technique for High-Speed CMOS Optical Receivers , 2014, IEEE Journal of Solid-State Circuits.

[6]  Sung Min Park,et al.  A 20-Gb/s Transformer-Based Current-Mode Optical Receiver in 0.13- $\mu\hbox{m}$ CMOS , 2010, IEEE Transactions on Circuits and Systems II: Express Briefs.

[7]  Toru Yazaki,et al.  A 4× 25-to-28Gb/s 4.9mW/Gb/s −9.7dBm high-sensitivity optical receiver based on 65nm CMOS for board-to-board interconnects , 2013, 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers.

[8]  E. Sackinger,et al.  Broadband Circuits for Optical Fiber Communication , 2005 .

[9]  Jun-De Jin,et al.  A Miniaturized 70-GHz Broadband Amplifier in 0.13-$\mu {\hbox{m}}$ CMOS Technology , 2008, IEEE Transactions on Microwave Theory and Techniques.

[10]  HanJungwon,et al.  A 20-Gb/s transformer-based current-mode optical receiver in 0.13-µm CMOS , 2010 .