CDC7005 Datasheet, PDF (1/29 Pages) Texas Instruments – 3.3-V HIGH PERFORMANCE CLOCK SYNTHESIZER AND JITTER CLEANER

CDC7005
3.3ĆV HIGH PERFORMANCE CLOCK SYNTHESIZER AND JITTER CLEANER
SCAS685E − DECEMBER 2002 − REVISED NOVEMBER 2004
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
TERMINAL ASSIGNMENTS
(TOP VIEW)
1
2
3
4
5
6
7
8
A
CTRL_LE
CTRL_
CLK
CTRL_
DATA
CP_OUT
OPA_IN
OPA_IP
OPA_OUT
STATUS_
LOCK
B REF_IN GND
GND
GND
GND
GND
GND
GND
C I_REF GND
AV_CC
AV_CC
AV_CC
AV_CC
STATUS_
AV_CC
REF
D VCXO_IN GND
GND
GND
GND
GND
V_CC
STATUS_
VCXO
E
VCXO_IN
B
GND
V_CC
V_CC
V_CC
V_CC
V_CC
V_CC
F
Y0
GND
GND
GND
GND
GND
V_CC
Y4B
G Y0B
V_CC
V_CC
V_CC
V_CC
V_CC
V_CC
Y4
H NPD
Y1
Y1B
Y2
Y2B
Y3
Y3B NRESET
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.
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.
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.
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Copyright  2004, Texas Instruments Incorporated
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