CDCM7005 Datasheet, PDF (1/40 Pages) Texas Instruments – 3.3-V HIGH PERFORMANCE CLOCK SYNCHRONIZER AND JITTER CLEANER

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CDCM7005
SCAS793A – JUNE 2005 – REVISED JUNE 2005
3.3-V HIGH PERFORMANCE CLOCK SYNCHRONIZER AND JITTER CLEANER
FEATURES
• 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 x1, /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 V_CC < 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
PIN ASSIGNMENTS (TOP VIEW)
1
2
3
4
5
6
7
8
A
PRI_REF REF_SEL VCC_CP CP_OUT CTRL_LE CTRL_CLK
CTRL_
DATA
PLL_LOCK
B SEC_REF GND GND GND GND GND GND GND
C VBB GND
D VCXO_IN GND
AVCC
GND
AVCC
GND
AVCC
GND
AVCC
GND
AVCC
VCC
STATUS_
REF or
PRI_SEC_
CLK
STATUS_
VCXO
or
I_REF_CP
E VCXO_IN GND
VCC
VCC
VCC
VCC
VCC
VCC
F
Y0A
GND GND GND GND GND
VCC
Y4B
G
Y0B
VCC
VCC
VCC
VCC
VCC
VCC
Y4A
RESET
H
PD
Y1A
Y1B
Y2A
Y2B
Y3A
Y3B
or
HOLD
P0022-01
SEC_REF
AVCC
AVCC
VBB
VCC
VCXO_IN
VCXO_IN
VCC
VCC
Y0A
Y0B
VCC
36 35 34 33 32 31 30 29 28 27 26 25
37
24
38
23
39
22
40
21
41
20
42
Thermal Pad
19
must be
43
soldered to GND
18
44
17
45
16
46
15
47
14
48
13
1 2 3 4 5 6 7 8 9 10 11 12
GND
STATUS_REF or
PRI_SEC_CLK
STATUS_VCXO or
I_REF_CP
VCC
VCC
VCC
VCC
Y4B
Y4A
VCC
RESET or
HOLD
VCC
P0023-01
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated