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