CDC7005系列介绍资料

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CDC7005

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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）

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The CDC7005 is a high-performance, low-phase noise, and low-skew clock synchronizer and jitter cleaner that synchronizes the voltage controlled crystal oscillator (VCXO) frequency to the reference clock. The programmable predividers M and N give a high flexibility to the frequency ratio of the reference clock to VCXO: VCXO_IN/REF_IN = (NxP)/M. The VCXO_IN clock operates up to 800 MHz. Through the selection of external VCXO and loop filter components, the PLL loop bandwidth and damping factor can be adjusted to meet different system requirements. Each of the five differential LVPECL outputs is programmable by the serial peripheral interface (SPI). The SPI allows individual control of frequency and enable/disable state of each output. The device operates in 3.3-V environment. The built-in latches ensure that all outputs are synchronized.

The CDC7005 is characterized for operation from –40°C to 85°C.

High Performance 1:5 PLL Clock Synchronizer
Two Clock Inputs: VCXO_IN Clock Is Synchronized to REF_IN Clock
Synchronizes Frequencies up to 800 MHz (VCXO_IN)
Supports Five Differential LVPECL Outputs
Each Output Frequency Is Selectable by x1, /2, /4, /8, /16
All Outputs Are Synchronized
Integrated Low-Noise OPA for External Low-Pass Filter
Efficient Jitter Screening From Low PLL Loop Bandwidth
Low-Phase Noise Characteristic
Programmable Delay for Phase Adjustments
Predivider Loop BW Adjustment
SPI Controllable Division Setting
Power-Up Control Forces LVPECL Outputs to 3-State at VCC <1.5 V
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

Function	Clock generator
Number of outputs	5
Output frequency (max) (MHz)	800
Core supply voltage (V)	3.3
Output supply voltage (V)	3.3
Input type	LVCMOS, LVPECL
Output type	LVPECL
Operating temperature range (°C)	-40 to 85
Features	Op-amp for active loop filter, Programmable delay
Rating	Catalog

BGA (ZVA)	64	64 mm² 8 x 8
VQFN (RGZ)	48	49 mm² 7 x 7

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CDC7005

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）

4000-306-326