TI Home > Semiconductors > Clocks and Timers > Clock Generation > Ultra Low Jitter Synthesizer and Jitter Cleaner > Internal VCO Output >

CDCE421A Status: ACTIVE

Fully Integrated Wide Range Low-Jitter Crystal Oscillator Clock Generator


      
         
Alert me about changes<br/>to this product


Datasheet

Download - PDF Icon

 CDC421A100 CDC421A106 CDC421A125 CDC421A156 CDC421A212 CDC421A250 CDC421A312 CDCE421ACDCM61001 
VCC(V)3.3  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  Crystal or LVCMOS  
Output LevelLVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVPECL  LVDS,LVPECL  LVPECL or LVDS or 2 LVCMOS  
No. of Outputs1  1  1  1  1  1  1  1  1  
Output Frequency(Min)(Mhz)100  106.25  125  156.25  212.5  250  312.5  10  43.75  
Output Frequency(Max)(Mhz)100  106.25  125  156.25  212.5  250  312.5  1100  683.28  
Divider Ratio       1,2,4,8,16,32  Universal  
RMS Jitter0.3  0.3  0.3  0.3  0.3  0.3  0.3  <1pS  500fs Typical, <1ps Max  
Operating Frequency Range(Min)(MHz)100  106.25  125  156.25  212.5  250  312.5  10  43.75  
Operating Frequency Range(Max)(MHz)100  106.25  125  156.25  212.5  250  312.5  1100  683.28  
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  3.3  
Supply Current(mA)110  110  110  110  110  110  110  85  108mA Max  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • CDCM61001: 1:1 Ultra Low Jitter Crystal-In Clock Generator
  • CDCE62002: Four Output Clock Generator/Jitter Cleaner with Integrated Dual VCOs
  • CDCE62005: 5/10 Outputs Clock Generator/Jitter Cleaner with Integrated Dual VCO
  • CDCE913: Programmable 1-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs
  • CDCE72010: 10 Outputs Low Jitter Clock Synchronizer and Jitter Cleaner
  • CDCS502: Crystal Oscillator / Clock Generator with optional SSC

More Related Products

Product Information

Features

  • Single Supply at 3.3 V for LVPECL or LVDS Operation
  • High-Performance Clock Multiplier, Incorporating Crystal Oscillator Circuitry with Integrated Frequency Synthesizer
  • Low Output Jitter: 380 fs RMS typical (from 10 kHz to 20 MHz)
  • Low Phase Noise at High Frequency (708-MHz LVPECL):
    • Typically -109 dBc/Hz at 10 kHz and -146dBc/Hz at 10 MHz from the carrier
  • Supports Crystal or LVCMOS Input Frequencies from 27.35 MHz to 38.33 MHz
  • Output Frequency Ranges from 10.9 MHz to 766.7 MHz and from 875.2 MHz to 1175 MHz
  • Low-Voltage Differential Signaling (LVDS) Output, 100- Differential Off-Chip Termination, 10.9-MHz to 400-MHz Frequency Range
  • Differential Low-Voltage Positive Emitter Coupled Logic (LVPECL) Outputs, 10.9-MHz to 1.175-GHz Frequency Range
  • Two Fully-Integrated Voltage-Controlled Oscillators (VCO) Support Wide Output Frequency Range
  • Fully Integrated Programmable Loop Filter
  • Typical Power Consumption at 3.3 V:
    • 274 mW in LVDS mode
    • 250 mW in LVPECL mode
  • Chip Enable Control Pin
  • Simple Serial Interface Allows Programming after Manufacturing
  • Integrated On-Chip Nonvolatile Memory (EEPROM) Stores Settings Without Applying High Voltage
  • 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, High-Frequency Crystal Oscillator

All trademarks are the property of their respective owners.

Description

The CDCE421A 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 to 2.350-GHz frequency range. It also features an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for the phase-locked loop (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 set the output frequency with respect to fXTAL.

In the CDCE421A, the feedback divider is set automatically with respect to the prescaler setting. The product of the prescaler and the feedback divider should be between 60 and 64 as shown in to maintain a stable control loop.

The CDCE421A supports one differential LVDS clock output or one differential LVPECL output. All device settings are programmable through a proprietary simple serial interface (SSI).

The device operates in 3.3-V supply environment for both LVPECL and LVDS outputs and is characterized for operation from -40°C to +85°C. The CDCE421A is available in a QFN-24 4-mm × 4-mm package.

CDCE421 Users:

The CDCE421A provides several device enhancements to the CDCE421.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
CDCE421ARGERACTIVE-40 to 857.00 | 1kuVQFN (RGE) | 24 View 3000 | LARGE T&RPurchase Samples
CDCE421ARGETACTIVE-40 to 857.70 | 1kuVQFN (RGE) | 24 View 250 | SMALL T&RContact TI Distributor or Sales Office
CDCE431YACTIVE-40 to 857.10 | 1kuDIESALE (Y) | 0  910Purchase Samples
CDCE431YSACTIVE-40 to 857.00 | 1kuWAFERSALE (YS) | 0  1Purchase Samples

* 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 11:55 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksCDCE421ARGER
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE421ARGET
AsiaWPI 89
WorldwideDigiKey 993
TI Lead Time*: 4 WeeksCDCE431Y
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE431YS
None Reported
View Distributors
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
CDCE421ARGER RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
CDCE421ARGET RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
CDCE431Y RoHS Compliant Green (RoHS & no Sb/Br) Call TI N/A for Pkg TypeViewView
CDCE431YS RoHS Compliant Green (RoHS & no Sb/Br) Call TI N/A for Pkg TypeViewView

* 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 CDCE421A Help

Datasheet

User Guides

Tools & Software

NamePart # Company Tool / Software Type
CDCE421A Evalution ModuleCDCE421AEVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
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 TI customers also evaluated this product.
CDCE62002 Four Output Clock Generator/Jitter Cleaner with Integrated Dual VCOs ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-INTERNAL VCO OUTPUT TI customers also evaluated this product.
CDCE62005 5/10 Outputs Clock Generator/Jitter Cleaner with Integrated Dual VCO ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-INTERNAL VCO OUTPUT TI customers also evaluated this product.
CDCM61004 1:4 Ultra Low Jitter Crystal-In Clock Generator ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-INTERNAL VCO OUTPUT TI customers also evaluated this product.
CDCM61002 1:2 Ultra Low Jitter Crystal-In Clock Generator ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-INTERNAL VCO OUTPUT TI customers also evaluated this product.
CDC421A100 Fully Integrated Fixed Frequency Low-Jitter Crystal Oscillator Clock Generator ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-INTERNAL VCO OUTPUT TI customers also evaluated this product.
CDCE913 Programmable 1-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs General Purpose Synthesizer with optional SSC-VCXO INPUT TI customers also evaluated this product.
CDCE72010 10 Outputs Low Jitter Clock Synchronizer and Jitter Cleaner WIRELESS BASE STATION CLOCKS-TRX ADC/DAC FREQUENCY SYNTHERSIZER/JITTER CLEANERS TI customers also evaluated this product.
CDCS502 Crystal Oscillator / Clock Generator with optional SSC General Purpose Synthesizer with optional SSC-NON-VCXO INPUT TI customers also evaluated this product.
CDCE925 Programmable 2-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs General Purpose Synthesizer with optional SSC-VCXO INPUT TI customers also evaluated this product.
CDCM7005 High Performance, Low Phase Noise, Low Skew Clock Synchronizer that Synchronizes Ref Clock to VCXO ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-EXTERNAL VCXO OUTPUT TI customers also evaluated this product.
CDC7005 High Performance, Low Phase Noise, Low Skew Clock Synchronizer that Synchronizes Ref Clock to VCXO ULTRA LOW JITTER SYNTHESIZER AND JITTER CLEANER-EXTERNAL VCXO OUTPUT TI customers also evaluated this product.
CDCE949 Programmable 4-PLL VCXO Clock Synthesizer with 2.5V or 3.3V LVCMOS Outputs General Purpose Synthesizer with optional SSC-VCXO INPUT TI customers also evaluated this product.
CDCE706 Programmable 3-PLL Clock Synthesizer / Multiplier / Divider General Purpose Synthesizer with optional SSC-NON-VCXO INPUT TI customers also evaluated this product.
CDCE906 Programmable 3-PLL Clock Synthesizer / Multiplier / Divider General Purpose Synthesizer with optional SSC-NON-VCXO INPUT TI customers also evaluated this product.
TL783 3 Pin 750mA Adjustable Positive Voltage Regulator with 125VIN LINEAR REGULATORS-STANDARD VOLTAGE REGULATORS TI customers also evaluated this product.

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here