CDC7005 datasheet(1/29 Pages) TI

Teilenummer	CDC7005

Bauteilbeschribung	3.3-V HIGH PERFORMANCE CLOCK SYNTHESIZER AND JITTER CLEANER

PDF	29 Pages

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Hersteller	TI [Texas Instruments]

Direct Link	http://www.ti.com

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CDC7005

3.3V HIGH PERFORMANCE CLOCK SYNTHESIZER AND JITTER CLEANER

SCAS685E − DECEMBER 2002 − REVISED NOVEMBER 2004

1

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

D High Performance 1:5 PLL Clock

Synchronizer

D Two Clock Inputs: VCXO_IN Clock Is

Synchronized to REF_IN Clock

D Synchronizes Frequencies up to 800 MHz

(VCXO_IN)

D Supports Five Differential LVPECL Outputs

D Each Output Frequency Is Selectable by x1,

/2, /4, /8, /16

D All Outputs Are Synchronized

D Integrated Low-Noise OPA for External

Low-Pass Filter

D Efficient Jitter Screening From Low PLL

Loop Bandwidth

D Low-Phase Noise Characteristic

D Programmable Delay for Phase

Adjustments

D Predivider Loop BW Adjustment

D SPI Controllable Division Setting

D Power-Up Control Forces LVPECL Outputs

to 3-State at VCC

<1.5 V

D 3.3-V Power Supply

D Available in a 64-Pin BGA Package

0,8-mm Pitch in Both Lead-Free ZVA and

Leaded GVA Packages

D Industrial Temperature Range –40°C to

85

°C

description

The CDC7005 is a high-performance, low-phase noise, and low-skew clock synthesizer 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 are 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.

Copyright

 2004, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

TERMINAL ASSIGNMENTS

(TOP VIEW)

CTRL_LE

CTRL_

CLK

CTRL_

DATA

CP_OUT

OPA_IN

OPA_IP

OPA_OUT

STATUS_

LOCK

REF_IN

GND

I_REF

GND

STATUS_

REF

VCXO_IN

GND

STATUS_

VCXO

VCXO_IN

B

GND

Y0

GND

Y4B

Y0B

Y4

NPD

Y1

Y1B

Y2

Y2B

Y3

Y3B

NRESET

1

2

3

4

5

6

7

8

A

B

C

D

E

F

G

H

VCC

AVCC

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