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Broadcom BCM87416:400G PAM-4 Transceiver PHY with Integrated TIA and Laser Driver

Product Description of BCM87416

BCM87416 is a high-performance, low-power 400GbE PAM-4 transceiver PHY capable of directly driving four lanes of 106-Gb/s PAM-4 at 53 Gbaud, while supporting DR4/FR4/LR4 optical links.

BCM87416 leverages a market-leading PAM-4 transceiver PHY technology platform and represents the industry’s first monolithic 400G PAM-4 PHY with integrated transimpedance amplifier (TIA) and laser driver, developed in 7-nm CMOS. The Broadcom advanced DSP technology and equalization techniques compensate for optical impairments inside pluggable optical modules while maintaining the world’s lowest power to enable the deployment of 12.8 Tb/s and higher-density switch ASICs.

BCM87416 incorporates a highly differentiated feature set, including integrated TIA, laser drivers, market-leading FEC capability options, and system-side switch ASIC SerDes interoperability to provide an unmatched competitive advantage in the market.

In 400GbE mode, the BCM87416 converts eight lanes of 53 Gb/s (at 26-Gbaud PAM-4) from the system side into four lanes of 106 Gb/s (at 53-Gbaud PAM-4) to directly drive next-generation high-density optical PAM-4 links inside QSFP-DD and OSFP form-factor modules. The BCM87416 is compliant with industry standards, including 400GBASE-DR4 and 100G-MSA draft 1.0 with KP4 FEC and FEC bypass capability.

The on-chip clock synthesis is performed by a low-cost 156.25-MHz reference clock through high-frequency, low-jitter phase-locked loops (PLLs).

Features of BCM87416

4 × 100G PAM-4 PHY drives 400GbE over optics – System side: 8 × 53G PAM-4 – Line side: 4 × 106G PAM-4

Supports DR4 to DR1 break-out mode with independent lane operation capability

Supports integrated laser driver and integrated TIA

Client-side interface compliance: IEEE C2C and C2Mannels

IEEE 802.3bs standard-compliant KP4 and end-to-end FEC bypass operation

Line-side and system-side loopbacks

Low-power 7-nm CMOS design

Applications of BCM87416

Wired network infrastructure

400G QSFP-DD/OSFP optical modules

400G DR4/FR4/LR4