General Description

The MAX9450/MAX9451/MAX9452 clock generators provide high-precision clocks for timing in SONET/SDH systems or Gigabit Ethernet systems. The MAX9450/MAX9451/MAX9452 can also provide clocks for the high-speed and high-resolution ADCs and DACs in 3G base stations. Additionally, the devices can also be used as a jitter attenuator for generating high-precision CLK signals.

Features

♦ Integrated VCXO Provides a Cost-Effective Solution for High-Precision Clocks

♦ 8kHz to 500MHz Input Frequency Range

♦ 15MHz to 160MHz Output Frequency Range

♦ I2C or SPI Programming for the Input and Output Frequency Selection

♦ PLL Lock Range > ±60ppm

♦ Two Differential Outputs with Three Types of Signaling: LVPECL, LVDS, or HSTL

♦ Input Clock Monitor with Hitless Switch

♦ Internal Holdover Function within ±20ppm of the Nominal Frequency

♦ Low Output CLK Jitter: < 0.8ps RMS in the 12kHz to 20MHz Band

♦ Low Phase Noise > -130dBc at 100kHz, > -140dBc at 1MHz

Applications

    SONET/SDH Systems

    10 Gigabit Network Routers and Switches

    3G Cellular Phone Base Stations

    General Jitter Attenuation