Overview

The GN2504 is a uni-directional quad-CDR retimer designed for reference-free 25-28Gbps signal conditioning on linecards interfacing next-generation modules such as CFP2, CFP4 and QSFP28 and to interface next-generation 25-28Gbps backplanes.

Packaging

  • GN2504-INE3 | 54-pin QFN

PB Free/ROHS

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Features

  • 4x 25-28Gbps reference-free clock and data recovery (CDR) with adjustable equalization
  • Supports channel loss > 30dB
  • Input jitter tolerance after equalization: 0.75UIpp
  • Less than 7pspp output jitter
  • High-performance serial data inputs
    • Sensitivity better than 50mVppd
    • Adjustable continuous-time linear equalization
  • Flexible serial data output drivers
    • Wide programmable swing range
    • 200mVppd to 1100mVppd
    • Programmable output de-emphasis
  • 3D eye monitor
  • Programmable lane polarity inversion
  • Per-lane loss of signal detection
  • Per-lane loss of CDR lock indication
  • Optional synchronous monitor clock output
  • PRBS 9, 15, 31 generator/checker
  • Integrated voltage and temperature sensor
  • Integrated I2C host interface
  • Single 1.8V power supply
  • Power dissipation: 525mW
  • 5mm x 7mm 54-pin QFN package
    • 0.4mm pin pitch
  • -20°C to +100°C case operation
  • Pb-free/RoHS-compliant

Applications

  • CEI-28G-VSR 4x25G retimed interfaces
  • CAUI-4 4x25G retimed interfaces
  • 25G to 28G backplanes

Inventory

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