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MaxLinear has introduced the MxL9142, a dual-channel 45 Gbaud linear coherent transimpedance amplifier (TIA) for high-bandwidth dense wave division multiplexing (DWDM) coherent applications. It is a dual-channel coherent TIA supporting high data rate of 45 Gbaud for 200 Gbps / 400 Gbps optical networking systems. Programmable channel bandwidth and an input equalizer allow receiver performance to be fine-tuned to work with different photo detectors (PD). The device offers industry leading linearity, low noise, and low power dissipation, which makes it the ideal TIA to use for next-generation ICR modules with high performance requirements.

It supports the low differential output swings required for next-generation low-power coherent DSPs. The high transimpedance gain is ideally suited for metro networks, which experience greater signal loss due to the prevalence of older fiber and multiple interconnects.

100 Gbps coherent system deployments are moving full-speed ahead, driven by the continued growth in bandwidth consumption in data centers and telecom networks. With 45 Gbaud technology, combined with higher modulation like DP-32QAM, capable of delivering up to 400 Gbps data rates in a single wavelength, MaxLinear now offers a complete coherent TIA product family to address the high-performance needs of next-generation high bandwidth coherent receivers.

The MxL9142’s pin-out assignment and functionality are fully compatible with MaxLinear's MxL9105 32 Gbaud coherent TIA, which allows one common package design for both 32 Gbaud and 45 Gbaud ICRs. The MxL9142 began sampling in March 2017.