-12dBm typical sensitivity: BER 1E-12, 0.5A/W, 25.78Gbps, ER=4dB
Low power consumption: typical 150mW/ch, 100mW/ch with CDR bypassed
High-sensitivity limiting amplifier and LOS threshold
Reference-clock-free CDR with programmable PLL BW and bypass mode
Individually programmable output swing, output disable, and de-emphasis / power-down per channel
Digital Diagnostic Monitoring (DDM) interface
12-channel average PD current monitoring (RSSI) output via a single pin
Supports -40 °C to +95 °C chip junction temperature
Extracted clock output at fb/16 (monitor clock)
PHO280112
4-channel 25.8G/28Gbps Transimpedance Amplifier with Integrated CDR, 250μm Pitch (WB)
PHO280112 is an integrated 12-channel 25.78 Gbps / 28.05 Gbps trans-impedance amplifier (TIA) with CDR and equalizer, serving as a complete single-chip transmission solution for optical modules.The center-to-center pitch between output pads is 250 μm to ensure compatibility with standard optical interfaces.
Each channel includes a high-sensitivity TIA with adjustable bandwidth, a high-performance CDR, and an output driver with adjustable swing and 3-tap de-emphasis, all of which are controllable via an I2C serial interface.The reference-clock-free CDR of the PHO280112can 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 PHO280112 bare die measures 3.1 mm x 2 mm and is supplied in waffle pack format.
Application Block Diagram
Features
Applications
Configurable alarm pins to flag LOS and LOL faults on any channel
100G optical modules, Active Optical Cables (AOC), and on-board optical engines
100G Ethernet
EDR InfiniBand
OTN
32G Fiber Channel
Companion device for PHO280912 12-channel 25/28Gbps VCSEL driver