Broadcom 7nm CMOS 800G (8:8) PAM-4 Transceiver PHY with Integrated TIA and Laser Driver - BCM85812A0-DIE

Product Description

Broadcom 7nm CMOS 800G (8:8) PAM-4 Transceiver PHY with Integrated TIA and Laser Driver - BCM85812A0-DIE

The Broadcom BCM87812 is a high-performance, and low-power 800GbE PAM-4 PHY transceiver capable of driving eight lanes of 106-Gb/s PAM-4 at 53 Gbaud, while supporting DR8, 2x FR4, and 2x LR4 optical links.

The BCM87812 incorporates a highly differentiated feature set, including integrated transimpedance amplifier (TIA), laser drivers, market-leading FEC capability options, and system-side switch ASIC SerDes interoperability to provide an unmatched competitive advantage to the market.

In 800GbE mode, the BCM87812 converts eight lanes of 106 Gb/s (at 53-Gbaud PAM-4) from the system side into eight lanes of 106 Gb/s (at 53-Gbaud PAM-4) to drive next-generation high-density optical PAM-4 links inside QSFPDD and OSFP form-factor modules.

The BCM87812 leverages market-leading 7-nm PAM-4 PHY transceiver technology platform, already proven with the BCM87400 and BCM8780 PHYs, and provides a path to accelerating 800G QSFP-DD/OSFP optical module availability. The advanced Broadcom DSP technology and equalization techniques compensate for optical impairments while maintaining the world's lowest power pluggable optical modules and co-packaged optical solutions to enable the deployment of 51.2-Tb/s and higher density switch ASICs.

The BCM87812 also features crossbar on both the system and line sides for easier routing in PCBs.

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).