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CDCE937 Status: ACTIVE

Programmable 3-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs


      
         
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Special Note

Pre-programming of customer-specific settings is available. Contact your local Texas Instruments sales representative or local authorized distributor for more information.

 CDCE913 CDCE925 CDCE937CDCE949 CDCEL913 CDCEL925 CDCEL937 CDCEL949 
Divider RatioUniversal Ratio  Universal Ratio  Universal Ratio  Universal Ratio  Universal ratio  Universal Ratio  Universal Ratio  Universal Ratio  
Input LevelCrystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  Crystal, LVCMOS  
Jitter-Peak to Peak(P-P) or Cycle to Cycle(C-C)60 ps  60 ps  60 ps  60 ps  60 ps  60 ps  60 ps  60 ps  
Multiplier RatioUniversal Ratio  Universal Ratio  Universal Ratio  Universal Ratio  Uiversal Ratio  Universal Ratio  Universal Ratio  Universal Ratio  
No. of Outputs3  5  7  9  3  5  7  9  
Pin/Package14TSSOP  16TSSOP  20TSSOP  24TSSOP  14TSSOP  16TSSOP  20TSSOP  24TSSOP  
Output Frequency(Max)(Mhz)230  230  230  230  230  230  230  230  
Output LevelLVCMOS  LVCMOS  LVCMOS  LVCMOS  LVCMOS  LVCMOS  LVCMOS  LVCMOS  
IO Supply (Volts)2.5 to 3.3  2.5 to 3.3  2.5 to 3.3  2.5 to 3.3  1.8  1.8  1.8  1.8  
Output Skew(ps)150  150  150  150  150  150  150  150  
VCC(V)1.8,3.3  1.8,3.3  1.8,3.3  1.8,3.3  1.8  1.8  1.8  1.8  
Operating Temp Range(Celsius)-40 to 85  -40 to 85  -40 to 85  -40 to 85  -40 to 85  -40 to 85  -40 to 85  -40 to 85  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • CDCE913: Programmable 1-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs
  • CDCE949: Programmable 4-PLL VCXO Clock Synthesizer with 2.5V or 3.3V LVCMOS Outputs
  • CDCE925: Programmable 2-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs
  • CDCEL937: Programmable 3-PLL VCXO Clock Synthesizer with 1.8-V LVCMOS Outputs
  • CDCE906: Programmable 3-PLL Clock Synthesizer / Multiplier / Divider
  • CDCE62005: 5/10 Outputs Clock Generator/Jitter Cleaner with Integrated Dual VCO

Product Information

Features

  • Member of Programmable Clock Generator Family
    • CDCE913/CDCEL913: 1-PLL, 3 Outputs
    • CDCE925/CDCEL925: 2-PLL, 5 Outputs
    • CDCE937/CDCEL937: 3-PLL, 7 Outputs
    • CDCE949/CDCEL949: 4-PLL, 9 Outputs
  • In-System Programmability and EEPROM
    • Serial Programmable Volatile Register
    • Nonvolatile EEPROM to Store Customer Setting
  • Flexible Input Clocking Concept
    • External Crystal: 8 MHz to 32 MHz
    • On-Chip VCXO: Pull Range ±150 ppm
    • Single-Ended LVCMOS up to 160 MHz
  • Selectable Output Frequency up to 230  MHz
  • Low-Noise PLL Core
    • Integrated PLL Loop Filter Components
    • Low Period Jitter (Typ 60 ps)
  • Separate Output Supply Pins
    • CDCE937: 3.3 V and 2.5 V
    • CDCEL937: 1.8 V
  • 1.8-V Device Power Supply
  • Flexible Clock Driver
    • Three User-Definable Control Inputs [S0/S1/S2] e.g., SSC Selection, Frequency Switching, Output Enable or Power Down
    • Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth, WLAN, Ethernet, and GPS
    • Generates Common Clock Frequencies Used With TI DaVinci, OMAP, DSPs
    • Programmable SSC Modulation
    • Enables 0-PPM Clock Generation
  • Wide Temperature Range –40° C to 85° C
  • Packaged in TSSOP
  • Development and Programming Kit for Easy PLL Design and Programming (TI Pro-Clock)
  • APPLICATIONS
    • D-TV, HD-TV, STB, IP-STB, DVD-Player, DVD-Recorder, Printer

Description

The CDCE937 and CDCEL937 are modular PLL-based low cost, high-performance, programmable clock synthesizers, multipliers and dividers. They generate up to 7 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230 MHz, using up to three independent configurable PLLs.

The CDCx937 has separate output supply pins, VDDOUT, which is 1.8 V for CDCEL937 and to 2.5 V to 3.3 V for CDCE937.

The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20 pF. Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external control signal, that is, PWM signal.

The deep M/N divider ratio allows the generation of zero ppm audio/video, networking (WLAN, BlueTooth, Ethernet, GPS) or Interface (USB, IEEE1394, Memory Stick) clocks from a reference input frequency such as 27 MHz.

All PLLs supports SSC (Spread-Spectrum Clocking). SSC can be Center-Spread or Down-Spread clocking which is a common technique to reduce electro-magnetic interference (EMI).

Based on the PLL frequency and the divider settings, the internal loop filter components are automatically adjusted to achieve high stability and optimized jitter transfer characteristic of each PLL.

The device supports non-volatile EEPROM programming for ease-customized application. It is preset to a factory default configuration. It can be reprogrammed to a different application configuration before PCB assembly, or reprogrammed by in-system programming. All device settings are programmable through SDA/SCL bus, a 2-wire serial interface.

Three programmable control inputs, S0, S1 and S2, can be used to control various aspects of operation including frequency selection changing the SSC parameters to lower EMI, PLL bypass, power down, and choosing between low level or 3-state for output-disable function.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
CDCE937PWACTIVE-40 to 852.35 | 1kuTSSOP (PW) | 20 View 70 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
CDCE937PWG4ACTIVE-40 to 852.35 | 1kuTSSOP (PW) | 20 View 70 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
CDCE937PWRACTIVE-40 to 852.15 | 1kuTSSOP (PW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
CDCE937PWRG4ACTIVE-40 to 852.15 | 1kuTSSOP (PW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase 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 WeeksCDCE937PW
AsiaWPI 22
TI Lead Time*: 20 WeeksCDCE937PWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE937PWR
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE937PWRG4
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
CDCE937PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE937PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE937PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE937PWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 CDCE937 Help

Datasheet

Application Notes

User Guides

Tools & Software

NamePart # Company Tool / Software Type
CDCE(L)949 Family EEPROM Programming BoardCDCEL9XXPROGEVMTexas InstrumentsDevelopment Boards/EVMs
ClockPro(TM) Programming SoftwareCLOCKPRO Texas Instruments Application Software 

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
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.
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.
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.
CDCEL937 Programmable 3-PLL VCXO Clock Synthesizer with 1.8-V LVCMOS Outputs DIGITAL MEDIA SYSTEMS CLOCKS-DSP AND DAVINCI CLOCKS 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.
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.
CDCE706 Programmable 3-PLL Clock Synthesizer / Multiplier / Divider General Purpose Synthesizer with optional SSC-NON-VCXO INPUT 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.
CDCEL949 Programmable 4-PLL VCXO Clock Synthesizer with 1.8-V LVCMOS Outputs DIGITAL MEDIA SYSTEMS CLOCKS-AUDIO/VIDEO IP-TV/IP-STB /STREAMING MEDIA TI customers also evaluated this product.

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