MaxLinear launches 32Gbaud dual-channel linear coherent transimpedance amplifier

MaxLinear, a provider of radio frequency (RF) and mixed-signal integrated circuits, is introducing the MxL9105, a dual-channel linear coherent transimpedance amplifier (TIA) for 100Gb/s and 200Gb/s dense wave division multiplexing (DWDM) coherent systems.

With low input-referred noise density, total harmonic distortion (THD), power dissipation, channel crosstalk and high channel bandwidth, the MxL9105 completely satisfies the performance requirements of next-generation intradyne coherent receiver (ICR) designs for long-haul and metro applications, the company says.

The MxL9105 is a dual-channel TIA with a per-channel data rate of 32Gbaud. Programmable channel bandwidth allows receiver sensitivity to be optimized with photo detectors from a wide range of manufacturers. Ultra-low input-referred noise density and extremely low power consumption make it ideal for the entire range of 32Gbaud ICR module designs including Type 1, Type 2, and the latest micro-ICR designs.

The MxL9105 supports low differential output swings required for the next generation of 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 fibre and multiple interconnects.

“While the 100Gbps market is still growing rapidly, carriers are starting active deployment trials of 200Gbps DWDM systems. We believe 2017 will be the year that broader demand for this technology will emerge,” said Bird Yuan, MaxLinear’s director of marketing for high speed interconnect products. “Relative to the legacy solution, the MxL9105 is superior in performance in all the critical metrics of comparison, namely sensitivity, linearity, and power consumption.”

The MxL9105’s pin-out assignment and functionality are fully compatible with its legacy 32Gbaud coherent TIA, which minimises customers’ re-design and re-qualification efforts. Samples are available now.


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