MaxLinear, Inc.(NYSE:MXL) has announced the availability of the MxL9154 and MxL9124 quad transimpedance amplifiers (TIAs). The MxL9154 and MxL9124 are the most recent additions to MaxLinear’s Telluride components family of linear PAM4 400-Gbps network systems, made up of products enabling system vendors to develop a 400-Gbps optical interconnect module in a compact form factor for intra-data center applications.
The MxL9154 delivers low input referred noise performance of 11pA/sqrt(Hz) while consuming 200 MW per channel. Satisfying the stringent 53-Gbaud PAM4 requirements by achieving 3% linearity up to overload conditions, the device also provides a bandwidth of greater than 25 GHz, including the photodiode (PD). The TIA delivers receive signal strength indicator (RSSI) outputs for all four channels as well. MaxLinear says shipping the MxL9154 with the MxL9354X PAM4 digital signal processor (DSP) system-on-chips (SoCs) will result in top-level performance for cost and power alike.
In January, MaxLinear began to sample its Telluride MxL935XX family of 400-Gbps PAM4 DSP SoCs (see "MaxLinear offers 400-Gbps Telluride MxL935XX PAM4 DSP SoC family").
According to MaxLinear, the MxL9124 TIA provides the same functionality as the MxL9124 in a lower bandwidth option ideal for 50-Gbps PAM4 applications. To attain various performance and reach requirements, the TIAs can be paired with PIN PDs or an externally biased avalanche photodiode (APD). The MxL9154 combined with the MxL9124 offers the bandwidth and noise performance for an array of applications, such as 200-Gbps DR4, 200-Gbps FR4, 200-Gbps LR4, 400-Gbps DR4, 400-GbpsFR4, and 400-Gbps LR8.
"PAM4-based 100-Gbps wavelength technology is emerging as the best option for 400-Gbps networks for intra data center applications. At these higher data rates, it is extremely important that all high-speed components be designed and optimized together to offer the best overall performance," said Will Torgerson, MaxLinear vice president and general manager. "The MxL9154 and MxL9124 TIAs have been developed in conjunction with the MxL9354X PAM4 DSP SoC for seamless optimization between the components."
The MxL9154 has an I2C interface that supports control of its performance directly from the MxL9354X PAM4 DSP SoC. The TIA has a die size of 3.2mm x 1.6mm, and fits into quad-ROSA size restrictions necessary for the QSFP-DD and OSFP module form factors.
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