General Description

The MAX3673 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 wireless base-station applications.

Features

♦ Two Reference Clock Inputs: LVPECL

♦ Nine Phase-Aligned Clock Outputs: LVPECL

♦ Input Frequencies: 61.44MHz,122.88MHz, 245.76MHz, 307.2MHz

♦ Output Frequencies: 61.44MHz, 122.88MHz, 153.6MHz, 245.76MHz, 307.2MHz

♦ 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

    3G Wireless Base Stations

    Frequency Translation

    Jitter Cleanup

    Clock Distribution