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CDC421A312 Status: ACTIVE

Fully Integrated Fixed Frequency Low-Jitter Crystal Oscillator Clock Generator


      
         
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See Also

  • CDCM61001 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  CDCM61001 has similar fucntionality with much wider frequency range. CDCM61001 shall recommended over CDC421A312.
 CDC421A100 CDC421A106 CDC421A125 CDC421A156 CDC421A212 CDC421A250 CDC421A312CDCE421A 
VCC(V)3.3  3.3  3.3  3.3  3.3  3.3  3.3  3.3  
Input LevelLVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  LVCMOS,CRYSTAL  
Output LevelLVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVDS,LVPECL  
No. of Outputs1  1  1  1  1  1  1  1  
Output Frequency(Min)(Mhz)100  106.25  125  156.25  212.5  250  312.5  10  
Output Frequency(Max)(Mhz)100  106.25  125  156.25  212.5  250  312.5  1100  
Divider Ratio       1,2,4,8,16,32  
RMS Jitter0.3  0.3  0.3  0.3  0.3  0.3  0.3  <1pS  
Operating Frequency Range(Min)(MHz)100  106.25  125  156.25  212.5  250  312.5  10  
Operating Frequency Range(Max)(MHz)100  106.25  125  156.25  212.5  250  312.5  1100  
Voltage Range3 to 3.6  3 to 3.6  3 to 3.6  3 to 3.6  3 to 3.6  3 to 3.6  3 to 3.6  3 to 3.6  
Supply Current(mA)110  110  110  110  110  110  110  85  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Product Information

Features

  • Single 3.3-V Supply
  • High-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer
  • Low Output Jitter: As low as 380 fs (RMS integrated between 10 kHz to 20 MHz)
  • Low Phase Noise at 312.5 MHz:
    • Less than -120 dBc/Hz at 10 kHz and -147 dBc/Hz at 10-MHz offset from carrier
  • Supports Crystal or LVCMOS Input Frequencies at 31.25 MHz, 33.33 MHz, and 35.42 MHz
  • Output Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and 312.5 MHz
  • Differential Low-Voltage Positive Emitter Coupled Logic (LVPECL) Outputs
  • Fully-Integrated Voltage-Controlled Oscillator (VCO): Runs from 1.75 GHz to 2.35 GHz
  • Typical Power Consumption: 300 mW
  • Chip Enable Control Pin
  • Available in 4-mm × 4-mm QFN-24 Package
  • ESD Protection Exceeds 2 kV (HBM)
  • Industrial Temperature Range: -40°C to +85°C
  • APPLICATIONS
    • Low-Cost, Low-Jitter Frequency Multiplier

All trademarks are the property of their respective owners.

Description

The CDC421Axxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based voltage-controlled oscillator (VCO) that operates within the 1.75 GHz to 2.35 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 a phase-locked loop (PLL)-based frequency synthesizer. The output frequency (fOUT) is proportional to the frequency of the input crystal (fXTAL).

The device operates in 3.3-V supply environment and is characterized for operation from -40°C to +85°C. The CDC421Axxx is available in a QFN-24 4-mm × 4-mm package.

The CDC421Axxx differs from the CDC421xxx in the following ways:

  • Device Startup

    • The CDC421Axxx has an improved startup circuit to enable correct operation for all power-supply ramp times.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
CDC421A312RGERACTIVE-40 to 857.00 | 1kuVQFN (RGE) | 24 View 3000 | LARGE T&RPurchase Samples
CDC421A312RGETACTIVE-40 to 857.70 | 1kuVQFN (RGE) | 24 View 250 | SMALL T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:01 PM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 16 WeeksCDC421A312RGER
None Reported
View Distributors
TI Lead Time*: 16 WeeksCDC421A312RGET
AsiaWPI 200
WorldwideDigiKey 639
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
CDC421A312RGER RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
CDC421A312RGET RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for CDC421A312 Help

Datasheet

Part # Name Product Family Comments
CDCM61001   1:1 Ultra Low Jitter Crystal-In Clock Generator   ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER - INTERNAL VCO OUTPUT   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  CDCM61001 has similar fucntionality with much wider frequency range. CDCM61001 shall recommended over CDC421A312.  

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