4 × 24 Gb/s 27 — 1 PRBS generator using 1.8 V MOS-HBT quasi-CML logic

An ultra-low-power, 2⁷ - 1 PRBS generator with four, appropriately delayed, parallel output streams was fabricated in a production 130-nm SiGe BiCMOS technology with HBT f_T /f_MAX of 230/280 GHz. The circuit is based on a 1.8 V MOS-HBT quasi-CML family and operates with serial data rates up to 24 Gb/s. It consumes 196 mW from 1.8 V, corresponding to only 49 mW per 24 Gb/s data lane or 2.04 pJ/bit.