MAX9450, MAX9451, MAX9452 High-Precision Clock Generators With Integrated VCXO

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.
The MAX9450 MAX9451 MAX9452 feature an integrated VCXO This configuration eliminates the use of an external VCXO and provides a cost-effective solution for generating high-precision Clocks The MAX9450 MAX9451 MAX9452 feature two differential inputs and Clock outputs. The inputs accept LVPECL, LVDs differential signals, and LVCMOS. The input reference Clocks range from 8kHz to 500MHz.
The MAX9450 MAX9451 MAX9452 offer LVPECL, HSTL, and LVDs outputs, respectively. The output range is up to 160MHz, depending on the selection of crystal. The input and output frequency selection is implemented through the IC or SPI" Interface The MAX9450 MAX9451 MAX9452 feature Clock output jitter less than 0.8ps RMS (in a 12kHz to 20MHz band) and phase-noise attenuation greater than -130dBc/Hz at 100kHz. The phase-locked loop (PLL) Filter CAN be set externally, and the Filter bandwidth CAN vary from 1Hz to 20kHz.
The MAX9450 MAX9451 MAX9452 feature an input Clock monitor with a hitless Switch When a failure is detected at the selected reference Clock the device CAN Switch to the other reference Clock The reaction to the recovery of the failed reference Clock CAN be revertive or nonrevertive. If both reference Clocks fail, the PLL retains its nominal frequency within a range of 20ppm at +25C.
The MAX9450 MAX9451 MAX9452 operate from 2.4V to 3.6V supply and are available in 32-pin TQFP packages with exposed pads.
By Maxim Integrated Products
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