An Inductor-Less 28-Gb/s NRZ Optical Receiver Analog Front-End Optimization Using BAG in 28-nm CMOS
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This paper presents an optimized design methodology for an inductor-less 28-Gb/s NRZ optical receiver (ORx) analog front-end (AFE) using the Berkeley Analog Generator (BAG) in 28-nm CMOS technology. With the increasing demand for high-speed data transmission in optical interconnects, achieving an optimal balance between gain, bandwidth, and noise in transimpedance amplifiers (TIAs) remains challenging. To address this challenge, optimization to maximize signal-to-noise ratio (SNR) is performed using BAG. Measured results of the ORx AFE demonstrate an input sensitivity of 8.5-dBm average optical power at 28-Gb/s, PRBS-7. This work highlights the potential of the BAG-based design framework for integration into advanced optical communication systems, facilitating future developments in high-speed optical inter-connects.
Abstract
This paper presents an optimized design methodology for an inductor-less 28-Gb/s NRZ optical receiver (ORx) analog front-end (AFE) using the Berkeley Analog Generator (BAG) in 28-nm CMOS technology. With the increasing demand for high-speed data transmission in optical interconnects, achieving an optimal balance between gain, bandwidth, and noise in transimpedance amplifiers (TIAs) remains challenging. To address this challenge, optimization to maximize signal-to-noise ratio (SNR) is performed using BAG. Measured results of the ORx AFE demonstrate an input sensitivity of 8.5-dBm average optical power at 28-Gb/s, PRBS-7. This work highlights the potential of the BAG-based design framework for integration into advanced optical communication systems, facilitating future developments in high-speed optical inter-connects.