Highly linear, high-speed, front-end, 8 level Pulse Amplitude Modulation receiver achieves 108 Gb/s data rate and 1.4 Vppd input range

https://techxplore.com/news/2025-11-frontend-gbs-pam.html

"processes high-voltage, higher-order signals,... fabricated in 28nm CMOS... 1.95 pJ/bit power efficiency... multi-path architecture: signal path divided, each path handling only sub-range of total dynamic range, reducing number of slicers/samplers, decreasing final stage's load, improving linearity-power trade-off, doubling linearity with only 20% power increase... separated Feed-Forward Equalization path for channel loss compensation while handling large input signals... accelerated supercomputers, speed between servers"