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CDCVF857 Status: ACTIVE

2.5 V Phase Lock Loop DDR Clock Driver


      
         
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Datasheet

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 CDCVF857
VCC(V)2.3 to 2.7  
Operating Frequency Range(Min)(MHz)60  
Operating Frequency Range(Max)(MHz)220  
Absolute Jitter (cycle-to-cycle)(ps)50  
t(phase error)(Min)(ps)-50  
t(phase error)(Max)(ps)50  
Input LevelSSTL-2  
No. of Outputs10  
tsk(o)(ns)0.075  
Output LevelSSTL-2  
Pin/Package40QFN, 48TSSOP, 56BGA MICROSTAR JUNIOR  
Operating Temp Range(Celsius)-40 to 85  
 Samples
 Inventory

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    • Product Information

    Features

    • Spread-Spectrum Clock Compatible
    • Operating Frequency: 60 MHz to 220 MHz
    • Low Jitter (Cycle-Cycle): ±35 ps
    • Low Static Phase Offset: ±50 ps
    • Low Jitter (Period): ±30 ps
    • 1-to-10 Differential Clock Distribution (SSTL2)
    • Best in Class for VOX = VDD/2 ±0.1 V
    • Operates From Dual 2.6-V or 2.5-V Supplies
    • Available in a 40-Pin MLF Package, 48-Pin TSSOP Package, 56-Ball MicroStar Junior™ BGA Package
    • Consumes < 100-µA Quiescent Current
    • External Feedback Pins (FBIN, FBIN) Are Used to Synchronize the Outputs to the Input Clocks
    • Meets/Exceeds JEDEC Standard (JESD82-1) For DDRI-200/266/333 Specification
    • Meets/Exceeds Proposed DDRI-400Specification (JESD82-1A)
    • Enters Low-Power Mode When No CLK Input Signal Is Applied or PWRDWN Is Low
    • APPLICATIONS
      • DDR Memory Modules (DDR400/333/266/200)
      • Zero-Delay Fan-Out Buffer

    MicroStar Junior is a trademark of Texas Instruments.

    Description

    The CDCVF857 is a high-performance, low-skew, low-jitter, zero-delay buffer that distributes a differential clock input pair (CLK, CLK) to 10 differential pairs of clock outputs (Y[0:9], Y[0:9]) and one differential pair of feedback clock outputs (FBOUT, FBOUT). The clock outputs are controlled by the clock inputs (CLK, CLK), the feedback clocks (FBIN, FBIN), and the analog power input (AVDD). When PWRDWN is high, the outputs switch in phase and frequency with CLK. When PWRDWN is low, all outputs are disabled to a high-impedance state (3-state) and the PLL is shut down (low-power mode). The device also enters this low-power mode when the input frequency falls below a suggested detection frequency that is below 20 MHz (typical 10 MHz). An input frequency detection circuit detects the low frequency condition and, after applying a >20-MHz input signal, this detection circuit turns the PLL on and enables the outputs.

    When AVDD is strapped low, the PLL is turned off and bypassed for test purposes. The CDCVF857 is also able to track spread spectrum clocking for reduced EMI.

    Because the CDCVF857 is based on PLL circuitry, it requires a stabilization time to achieve phase-lock of the PLL. This stabilization time is required following power up. The CDCVF857 is characterized for both commercial and industrial temperature ranges.

    		    

    Pricing / Packaging / CAD Design Tools / Samples

    PricePackagingCAD Design ToolsSamples
    DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
    CDCVF857DGGACTIVE-40 to 853.65 | 1kuTSSOP (DGG) | 48 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
    CDCVF857DGGG4ACTIVE-40 to 853.65 | 1kuTSSOP (DGG) | 48 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
    CDCVF857DGGRACTIVE-40 to 853.35 | 1kuTSSOP (DGG) | 48 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
    CDCVF857DGGRG4ACTIVE-40 to 853.35 | 1kuTSSOP (DGG) | 48 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
    CDCVF857GQLRACTIVE-40 to 853.60 | 1kuBGA MICROSTAR JUNIOR (GQL) | 56 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
    CDCVF857RHARACTIVE-40 to 853.60 | 1kuQFN (RHA) | 40 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
    CDCVF857RHARG4ACTIVE-40 to 853.60 | 1kuQFN (RHA) | 40 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
    CDCVF857RHATACTIVE-40 to 853.95 | 1kuQFN (RHA) | 40 View 250 | SMALL T&R Download CAD Format for this Symbol 
    CDCVF857RHATG4ACTIVE-40 to 853.95 | 1kuQFN (RHA) | 40 View 250 | SMALL T&R Download CAD Format for this Symbol 
    CDCVF857RTBRACTIVE-40 to 853.60 | 1kuQFN (RTB) | 40 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
    CDCVF857RTBTACTIVE-40 to 853.95 | 1kuQFN (RTB) | 40 View 250 | SMALL T&R Download CAD Format for this Symbol 
    CDCVF857ZQLRACTIVE-40 to 853.60 | 1kuBGA MICROSTAR JUNIOR (ZQL) | 56 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint

    * 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 11:54 AM GMT, 08 Nov 2009
    RegionCompanyIn StockPurchase
    TI Lead Time*: 20 WeeksCDCVF857DGG
    AmericasAvnet 515
    Newark 113
    Rochester Electronics 425
    AsiaWPI 90
    WorldwideDigiKey 131
    TI Lead Time*: 20 WeeksCDCVF857DGGG4
    WorldwideDigiKey  Available
    TI Lead Time*: 20 WeeksCDCVF857DGGR
    AmericasRochester Electronics >1k
    WorldwideDigiKey  Available
    TI Lead Time*: 20 WeeksCDCVF857DGGRG4
    WorldwideDigiKey  Available
    TI Lead Time*: 6 WeeksCDCVF857GQLR
    AmericasRochester Electronics >1k
    WorldwideDigiKey 192
    TI Lead Time*: 20 WeeksCDCVF857RHAR
    AmericasRochester Electronics >1k
    WorldwideDigiKey  Available
    TI Lead Time*: 20 WeeksCDCVF857RHARG4
    AmericasAvnet >1k
    WorldwideDigiKey  Available
    TI Lead Time*: 4 WeeksCDCVF857RHAT
    AmericasRochester Electronics 750
    AsiaWPI 200
    WorldwideDigiKey 147
    TI Lead Time*: 4 WeeksCDCVF857RHATG4
    WorldwideDigiKey  Available
    TI Lead Time*: 4 WeeksCDCVF857RTBR
    AmericasRochester Electronics >1k
    WorldwideDigiKey  Available
    TI Lead Time*: 1 WeekCDCVF857RTBT
    AmericasRochester Electronics 500
    AsiaWPI 250
    WorldwideDigiKey 274
    TI Lead Time*: 1 WeekCDCVF857ZQLR
    AsiaWPI 1k
    WorldwideDigiKey 533
    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
    CDCVF857DGG RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    CDCVF857DGGG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    CDCVF857DGGR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    CDCVF857DGGRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
    CDCVF857GQLR  TBD SNPB Level-2A-220C-4 WKSViewView
    CDCVF857RHAR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
    CDCVF857RHARG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
    CDCVF857RHAT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
    CDCVF857RHATG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
    CDCVF857RTBR  TBD CU SNPB Level-3-235C-168 HRViewView
    CDCVF857RTBT  TBD CU SNPB Level-3-235C-168 HRViewView
    CDCVF857ZQLR RoHS Compliant Green (RoHS & no Sb/Br) SNAGCU 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.

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