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Analog Devices - 12 LVDS/24 CMOS Output Clock Generator

Numéro de référence AD9522-1
Description 12 LVDS/24 CMOS Output Clock Generator
Fabricant Analog Devices 
Logo Analog Devices 





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AD9522-1 fiche technique
Data Sheet
12 LVDS/24 CMOS Output Clock Generator
with Integrated 2.4 GHz VCO
AD9522-1
FEATURES
Low phase noise, phase-locked loop (PLL)
On-chip voltage controlled oscillator (VCO) tunes from
2.27 GHz to 2.65 GHz
Supports external 3.3 V/5 V VCO/VCXO to 2.4 GHz
1 differential or 2 single-ended reference inputs
Accepts CMOS, LVPECL, or LVDS references to 250 MHz
Accepts 16.62 MHz to 33.3 MHz crystal for reference input
Optional reference clock doubler
Reference monitoring capability
Revertive automatic and manual reference switchover/
holdover modes
Glitch-free switchover between references
Automatic recovery from holdover
Digital or analog lock detect, selectable
Optional zero delay operation
Twelve 800 MHz LVDS outputs divided into 4 groups
Each group of 3 has a 1-to-32 divider with phase delay
Additive output jitter as low as 242 fs rms
Channel-to-channel skew grouped outputs < 60 ps
Each LVDS output can be configured as 2 CMOS outputs
(for fOUT ≤ 250 MHz)
Automatic synchronization of all outputs on power-up
Manual synchronization of outputs as needed
SPI- and I²C-compatible serial control port
64-lead LFCSP
Nonvolatile EEPROM stores configuration settings
APPLICATIONS
Low jitter, low phase noise clock distribution
Clock generation and translation for SONET, 10Ge, 10G FC,
and other 10 Gbps protocols
Forward error correction (G.710)
Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
High performance wireless transceivers
ATE and high performance instrumentation
Broadband infrastructures
GENERAL DESCRIPTION
The AD9522-11 provides a multioutput clock distribution
function with subpicosecond jitter performance, along with an
on-chip PLL and VCO. The on-chip VCO tunes from 2.27 GHz
to 2.65 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz
can also be used.
FUNCTIONAL BLOCK DIAGRAM
CP LF
OPTIONAL
REFIN
REFIN
CLK
REF1
REF2
DIVIDER
AND MUXES
DIV/Φ
VCO
STATUS
MONITOR
ZERO
DELAY
LVDS/
CMOS
DIV/Φ
DIV/Φ
DIV/Φ
SPI/I2C CONTROL
PORT AND
EEPROM
DIGITAL LOGIC
AD9522
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
Figure 1.
The AD9522 serial interface supports both SPI and I2C® ports.
An in-package EEPROM can be programmed through the
serial interface and store user-defined register settings for
power-up and chip reset.
The AD9522 features 12 LVDS outputs in four groups. Any of
the 800 MHz LVDS outputs can be reconfigured as two
250 MHz CMOS outputs.
Each group of outputs has a divider that allows both the divide
ratio (from 1 to 32) and the phase (coarse delay) to be set.
The AD9522 is available in a 64-lead LFCSP and can be operated
from a single 3.3 V supply. The external VCO can have an
operating voltage up to 5.5 V.
The AD9522 is specified for operation over the standard industrial
range of −40°C to +85°C.
The AD9520-1 is an equivalent part to the AD9522-1 featuring
LVPECL/CMOS drivers instead of LVDS/CMOS drivers.
1 The AD9522 is used throughout this data sheet to refer to all the members of the AD9522 family. However, when AD9522-1 is used, it is referring to that specific
member of the AD9522 family.
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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