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CDCE925 Status: ACTIVE

Programmable 2-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 CDCE925CDCE937 CDCE949 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
  • CDCE937: Programmable 3-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs
  • CDCS502: Crystal Oscillator / Clock Generator with optional SSC
  • CDCE906: Programmable 3-PLL Clock Synthesizer / Multiplier / Divider
  • CDCE706: Programmable 3-PLL Clock Synthesizer / Multiplier / Divider

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
  • Flexible Clock Driver
    • Three User-Definable Control Inputs [S0/S1/S2] e.g., SSC Selection, Frequency Switching, Output Enable or Power Down
    • Programmable SSC Modulation
    • Enables 0-PPM Clock Generation
    • Generates Common Clock Frequencies Used With Texas Instruments DaVinci, OMAP, DSPs
    • Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth, WLAN, Ethernet, and GPS
  • 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
    • PLL Loop Filter Components Integrated
    • Low Period Jitter (Typ 60 ps)
  • 1.8-V Device Power Supply
  • Separate Output Supply Pins
    • CDCE925: 3.3 V and 2.5 V
    • CDCEL925: 1.8 V
  • 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, STB, IP-STB, DVD-Player, DVD-Recorder, Printer

Description

The CDCE925 and CDCEL925 are modular PLL-based low-cost, high-performance, programmable clock synthesizers, multipliers, and dividers. They generate up to five 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 two independent configurable PLLs.

The CDCx925 has separate output supply pins, VDDOUT, which is 1.8 V for CDCEL925 and 2.5 V to 3.3 V for CDCE925.

The input accepts an external crystal or LVCMOS clock signal. In case of a crystal input, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 pF 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 27 MHz reference input frequency, for example.

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 nonvolatile EEPROM programming for easy customization of the device in the application. It is preset to a factory default configuration and can be re-programmed to a different application configuration before it goes onto the PCB or re-programmed by in-system programming. All device settings are programmable through SDA/SCL bus, a 2-wire serial interface.

Three, free programmable control inputs, S0, S1, and S2, can be used to select different frequencies, or change SSC setting for lowering EMI, or other control features like outputs disable to low, outputs 3-state, power down, PLL bypass, etc.).

The CDCx925 operates in a 1.8 V environment. It operates in a temperature range of –40 °C to 85 °C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
CDCE925PWACTIVE-40 to 852.15 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
CDCE925PWG4ACTIVE-40 to 852.15 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
CDCE925PWRACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
CDCE925PWRG4ACTIVE-40 to 851.95 | 1kuTSSOP (PW) | 16 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 WeeksCDCE925PW
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE925PWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE925PWR
None Reported
View Distributors
TI Lead Time*: 20 WeeksCDCE925PWRG4
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
CDCE925PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE925PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE925PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
CDCE925PWRG4 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 CDCE925 Help

Datasheet

Application Notes

User Guides

Tools & Software

NamePart # Company Tool / Software Type
CDCE(L)949 Family EEPROM Programming BoardCDCEL9XXPROGEVMTexas InstrumentsDevelopment Boards/EVMs
CDCE925 Performance Evaluation ModuleCDCE925PERF-EVMTexas InstrumentsDevelopment Boards/EVMs
ClockPro(TM) Programming SoftwareCLOCKPRO Texas Instruments Application Software 

Customers Who Evaluated This Product Also Evaluated...
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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.
CDCE937 Programmable 3-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.
CDCS502 Crystal Oscillator / Clock Generator with optional SSC 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.
CDCE706 Programmable 3-PLL Clock Synthesizer / Multiplier / Divider General Purpose Synthesizer with optional SSC-NON-VCXO INPUT TI customers also evaluated this product.
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