General Description

The MAX3671 is a low-jitter frequency synthesizer that accepts two reference clock inputs and generates nine phase-aligned outputs. The device features 40kHz jitter transfer bandwidth, 0.3psRMS (12kHz to 20MHz) integrated phase jitter, and best-in-class power-supply noise rejection (PSNR), making it ideal for jitter cleanup, frequency translation, and clock distribution in Gigabit Ethernet applications.

Features

♦ Two Reference Clock Inputs: LVPECL

♦ Nine Phase-Aligned Clock Outputs: LVPECL

♦ Input Frequencies: 62.5MHz,125MHz, 250MHz, 312.5MHz

♦ Output Frequencies: 62.5MHz, 125MHz, 156.25MHz, 250MHz, 312.5MHz

♦ Low-Jitter Generation: 0.3psRMS (12kHz to 20MHz)

♦ Clock Failure Indicator for Both Reference Clocks

♦ External Feedback Provides Zero-Delay Capability

♦ Low Output Skew: 20ps Typical

Applications

    Gigabit Ethernet Routers and Switches

    Frequency Translation

    Jitter Cleanup

    Clock Distribution