General Description
The SY88973BL low-power, limiting post amplifier is designed for use in fiber optic receivers. The device connects to typical transimpedance amplifiers (TIAs). The linear signal output from TIAs can contain significant amounts of noise and may vary in amplitude over time. The SY88973BL quantizes these signals and outputs typically 800mVPP voltage-limited waveforms.

Features
• Multi-rate up to 3.2Gbps operation
• Wide gain-bandwidth product
• 38dB differential gain
• 2GHz 3dB bandwidth
• Low noise 50Ω CML data outputs
    – 800mVPP output swing
    – 60ps edge rates
    – 5psRMS typ. random jitter
    – 15psPP typ. deterministic jitter
• Chatter-free, Loss-of-Signal (LOS) output
    – No internal pull-up resistor− fully compliant with SFP MSA
    – 4.6dB electrical hysteresis
    – OC-TTL output
• Programmable LOS sensitivity using single external resistor
• Internal 50Ω data input termination
• TTL /EN input allows feedback from LOS
• Wide operating range:
    – Single 3.3V ±10%
    – –40°C to +85°C industrial temperature range
• Available in a tiny 3mm x 3mm 16-pin QFN package

Applications
• 1.25Gbps and 2.5Gbps Gigabit Ethernet
• 1.062Mbps and 2.125Gbps Fibre Channel
• 155Mbps, 622Gbps, 1.25Gbps, and 2.5Gbps SONET/SDH
• Gigabit interface converter (GBIC)
• Small form factor (SFF) and small form factor pluggable (SFP) transceivers
• Parallel 10G Ethernet
• High-gain line driver and line receiver