MaxLinear, Inc. is demonstrating Molex LLC’s 400G-DR4 optical modules based on MaxLinear’s Telluride (MxL9354x) pulse-amplitude-modulation (PAM4) digital signal processors (DSPs) at the China International Optoelectronic Exposition
The demonstrated 400G-DR4 optical modules join Molex’s complete line of data center connectivity products, providing solutions for optical interconnects across all tiers of the data center.
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MaxLinear’s MxL9354x Telluride family of SoCs are key components in the deployment of hyper-scale data centers based on 100Gbps single lambda optical interconnects. They enabled Molex to build their high-performance 400Gbps optical modules in a compact QSFP-DD form factor for intra-datacenter applications and meet the strict performance and interoperability requirements of next-generation hyper-scale data centers.
“With the exponential growth of data traffic within hyperscale cloud networks driving demand for ever-increasing volumes of high-speed interconnects, 400Gbps Telluride-based transceiver modules are key enablers for current and next-generation hyperscale data centers,” said Drew Guckenberger, Vice President of MaxLinear Optical Interconnect Group. “Through our partnership with Molex, the demonstrated Telluride-based optical modules meet all of the stringent link performance metrics demanded by our key hyperscale customers, enabling high-volume deployments and meeting their growing network expansion needs.”
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Technical Details
The Telluride family of high-performance PAM4 DSP SoCs enable 400Gbps optical modules using a 4x100Gbps optics interface. These SoCs are suitable for use within QSFP-DD and OSFP module form factors. The MxL9354x 400G PAM4 DSP integrates an optional EA-EML driver with a 1.8V PP SE swing.
Asynchronous breakout mode clocking is an essential feature for hyperscale data center customers initiating 400G DR4 deployments. MaxLinear’s 400G Telluride DSPs (MxL9354x) successfully integrate this clocking requirement.
The devices feature a comprehensive digital pre-distortion (DPD) engine in the transmit direction to compensate for laser non-linearity and to cancel packaging limitations that cause reflections and bandwidth degradation at these extremely high signal frequencies. On the receive path, the DSP includes an auto-adaptive signal enhancement engine, which integrates a continuous time linear equalizer (CTLE), automatic gain control (AGC), a feed-forward equalizer (FFE), and a decision feedback equalizer (DFE).
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