

CDCM7005是TI公司的一款单回路PLL产品,CDCM7005是高性能、低相位噪声、低偏移的时钟同步器(使参考时钟与 VCXO 同步),本页介绍了CDCM7005的产品说明、应用、特性等,并给出了与CDCM7005相关的TI元器件型号供参考。
CDCM7005 - 高性能、低相位噪声、低偏移的时钟同步器(使参考时钟与 VCXO 同步) - 单回路PLL - 时钟抖动消除器 - TI公司(Texas Instruments,德州仪器)
- High Performance LVPECL and LVCMOS PLL Clock Synchronizer
- Two Reference Clock Inputs (Primary and Secondary Clock) for Redundancy Support With Manual or Automatic Selection
- Accepts LVCMOS Input Frequencies up to 200 MHz
- VCXO_IN Clock is Synchronized to One of the Two Reference Clocks
- VCXO_IN Frequencies Up to 2.2 GHz (LVPECL)
- Outputs Can Be a Combination of LVPECL and LVCMOS (Up to Five Differential LVPECL Outputs or up to 10 LVCMOS Outputs)
- Output Frequency is Selectable by ×1, /2, /3, /4, /6, /8, /16 on Each Output Individually
- Efficient Jitter Cleaning From Low PLL Loop Bandwidth
- Low Phase Noise PLL Core
- Programmable Phase Offset (PRI_REF and SEC_REF to Outputs)
- Wide Charge Pump Current Range From 200 μA to 3 mA
- Dedicated Charge Pump Supply (VCC_CP) for Wide Tuning Voltage Range VCOs
- Presets Charge Pump to VCC_CP/2 for Fast Center-Frequency Setting of VC(X)O
- Analog and Digital PLL Lock Indication
- Provides VBB Bias Voltage Output for Single-Ended Input Signals (VCXO_IN)
- Frequency Hold-Over Mode Improves Fail-Safe Operation
- Power-up Control Forces LVPECL Outputs to 3-State at VCC < 1.5 V
- SPI Controllable Device Setting
- 3.3-V Power Supply
- Packaged in 64-Pin BGA (0.8 mm Pitch – ZVA) or 48-Pin QFN (RGZ)
- Industrial Temperature Range –40°C to 85°C
- Wireless Infrastructure
- SONET
- Data Communication
- Test Equipment
The CDCM7005 is a high-performance, low phase noise and low skew clock synchronizer that synchronizes a VCXO (voltage controlled crystal oscillator) or VCO (voltage controlled oscillator) frequency to one of the two reference clocks. The programmable pre-divider M and the feedback-dividers N and P give a high flexibility to the frequency ratio of the reference clock to VC(X)O
VC(X)O_IN clock operates up to 2.2 GHz. Through the selection of external VC(X)O and loop filter components, the PLL loop bandwidth and damping factor can be adjust to meet different system requirements.
The CDCM7005 can lock to one of two reference clock inputs (PRI_REF and SEC_REF), supports frequency hold-over mode and fast-frequency-locking for fail-safe and increased system redundancy. The outputs of the CDCM7005 are user definable and can be any combination of up to five LVPECL outputs or up to 10 LVCMOS outputs. The built in synchronization latches ensure that all outputs are synchronized for low output skew.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
CDCM7005 | VQFN (48) | 7.00 mm × 7.00 mm |
BGA (64) | 8.00 mm × 8.00 mm |

