12-channel 25.78G/28.05Gbps VCSEL driver / CDR / equalizer
Low power consumption: typical 160mW/ch, 125mW/ch with CDR bypassed
Programmable eye-shaping function for easy adaptation to various VCSELs
Reference-clock-free CDR with programmable PLL BW and bypass mode
Individually programmable / power-down per channel
Digital Diagnostic Monitoring (DDM) interface
Supports -40 °C to +95 °C junction temperature
Extracted clock output at fb/16 (monitor clock)
Programmable configuration for bias and modulation currents (both supporting 0.1 to 12.8 mA)
Alarm pins for LOS, LOL, and TX Fault on any channel
PHO280912
4-channel 25.8G/28Gbps VCSEL Driver with Integrated CDR, 250μm Pitch (WB)
PHO280912 is an integrated 12-channel 25.78 Gbps / 28.05 Gbps VCSEL driver with CDR and equalizer, serving as a complete single-chip transmission solution for optical modules.The center-to-center pitch between output pads is 250μm to ensure compatibility with standard optical interfaces.Each channel includes a VCSEL driver with eye-shaping functionality, a high-performance CDR, and a high-compensation equalizer, all of which are controllable via an I2C serial interface.The reference-clock-free CDR of the PHO28094 can retime at 25.78 Gbps, 27.95 Gbps, and 28.05 Gbps.Legacy or non-standard data rates can be supported through the bypass function.The PHO28094 bare die measures 3.1 mm x 2 mm and is supplied in waffle pack format.
Application Block Diagram
Features
Applications
100G optical modules, Active Optical Cables (AOC), and on-board optical engines
100G Ethernet
EDR InfiniBand
OTN
32G Fiber Channel
Companion device for PHO280112 12-channel 25/28Gbps TIA