Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator

The CDCE421 is a high-performance, low-phase-noise Clock Generator It has two fully integrated, low-noise, LC-based voltage controlled Oscillators (VCOs) that operate in the 1.750-GHz-2.350-GHz frequency range. It has an integrated crystal Oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for the PLL-based Frequency Synthesizer
The output frequency (fout) is proportional to the frequency of the input crystal (fxtal). The prescaler divider, feedback divider, output divider, and VCO selection are what set (fout) with respect to (fxtal).
The CDCE421 supports one differential LVDs Clock output or one differential LVPECL output.
All device settings are programmable through a Texas Instruments proprietary simple serial Interface
The device operates in a 3.3-V supply environment and is characterized for operation from -40C to 85C.
The CDCE421 is available in die form or in a QFN-24 package.
In the CDCE421 the feedback divider is set automatically with respect to the prescaler setting. The product of the prescaler and the feedback divider will be either 60 or 64 to keep the control loop stable.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
CDCE421ARGET Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN -40 to 85
CDCE421RGET Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN
CDCE421RGETG4 Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN
CDCE421ARGER Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN -40 to 85
CDCE421RGERG4 Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN
CDCE421RGER Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 24-VQFN
CDCE421Y Texas Instruments Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator 0-DIESALE
CDCE421EVM Texas Instruments CDCE421EVM Evaluation Module
CDCE421 's PackagesCDCE421 's pdf datasheet
CDCE421RGER QFN
CDCE421RGERG4 QFN
CDCE421RGET QFN
CDCE421RGETG4 QFN
CDCE421YS




CDCE421 Pinout, Pinouts
CDCE421 pinout,Pin out
This is one package pinout of CDCE421,If you need more pinouts please download CDCE421's pdf datasheet.

CDCE421 Application circuits
CDCE421 circuits
This is one application circuit of CDCE421,If you need more circuits,please download CDCE421's pdf datasheet.


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