AD9522-3

RECOMMENDED FOR NEW DESIGNS

12 LVDS/24 CMOS Output Clock Generator with Integrated 2 GHz VCO

Data Sheet (Rev. A) Product Selection Table

Part Models: 2
1ku List Price: Starting From $16.03

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Overview

Low phase noise, phase-locked loop (PLL)
On-chip VCO tunes from 1.72 GHz to 2.25 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
See Data Sheet for Additional Information

The AD9522-3¹ provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.72 GHz to 2.25 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used.

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 AD9520-3 is an equivalent part to the AD9522-3 featuring LVPECL / CMOS drivers instead of LVDS / CMOS drivers.

¹The AD9522 is used throughout this data sheet to refer to all the members of the AD9522 family. However, when AD9522-3 is used, it is referring to that specific member of the AD9522 family.

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

Data Sheet, Rev. 0, 10/08

Part Models: 2
1ku List Price: Starting From $16.03

Documentation

Frequently Asked Question 1

FAQ 09/05/2025

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD9522-3BCPZ	64-Lead LFCSP (9mm x 9mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9522-3BCPZ-REEL7	64-Lead LFCSP (9mm x 9mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 26, 2023 - 23_0025 Package Outline Drawing and Data Sheet Revision for Select LFCSP Products in Amkor
		PCN23_0025_Form Material_Report Package Outline Drawing Qualification Results Summary
AD9522-3BCPZ	PRODUCTION
AD9522-3BCPZ-REEL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Evaluation Software 1

AD9522 Evaluation Board USB Flash Programmer Readme

AD9522 Evaluation Board USB Flash Programmer Readme

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
Comparators 1
LTC6957		Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
Phase-Locked Loop (PLL) Synthesizers 1
ADF4002	RECOMMENDED FOR NEW DESIGNS	Phase Detector / PLL Frequency Synthesizer

Tools & Simulations

ADIsimCLK Design and Evaluation Software

ADIsimCLK is the design tool developed specifically for Analog Devices' range of ultra-low jitter clock distribution and clock generation products. Whether your application is in wireless infrastructure, instrumentation, networking, broadband, ATE or other areas demanding predictable clock performance, ADIsimCLK will enable you to rapidly develop, evaluate and optimize your design.

Open Tool

AD9522-x IBIS Models 1

AD9522-x (All Models/All Speed Grades)

Evaluation Kits

AD9522-3 Evaluation Board

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Features and Benefits

Simple power connection using 6 V wall adapter and on-board LDO voltage regulators
LDOs are easily bypassed for power measurements
5 ac-coupled differential LVDS SMA connectors
7 LVDS differential headers for additional outputs
SMA connectors for
2 reference inputs
Charge pump output
Clock distribution input
USB connection to PC
Microsoft Windows-based evaluation software with simple graphical user interface
On-board PLL loop filter
Easy access to digital I/O and diagnostic signals via I/O header
Status LEDs for diagnostic signals

Product Details

The AD9522-x (hereafter referred to as AD9522) is a very low noise PLL clock synthesizer featuring an integrated VCO, clock dividers, and up to 24 outputs. The AD9522 features automatic holdover and a flexible reference input circuit allowing for very smooth reference clock switching. The AD9522 family also features the necessary provisions for an external VCXO.

The AD9522 evaluation board is a compact, easy to use platform for evaluating all features of the AD9522.