ANALOG DEVICES UG-077 Service Manual

Evaluation Board User Guide

08747-001

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: [phone] • Fax: [phone] • www.analog.com

UG-077

AD9522-x Evaluation Board

FEATURES

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

APPLICATIONS

Clocking of analog-to-digital and digital-to-analog

converters up to 2.9 GHz
Networking and communications line cards
Test and measurement equipment
Wireless base stations, controllers
Clock cleanup/jitter attenuation
Clock distribution

GENERAL DESCRIPTION

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. This user guide
covers all six versions of the AD9522 family.

Although the Quick Start Guide to the AD9522 PLL section
applies specifically to the AD9522-4, increasing the N (feedback)
divider and channel divider increases the VCO frequency to the
allowable frequency range of other AD9522 versions.

For the AD9522-5, which lacks the internal VCO, certain portions
of this user guide that apply to the internal VCO (such as VCO
calibration) can be ignored.

For convenience, detailed information from the AD9522 data sheet
has been included here. Use this user guide in conjunction with
the AD9520 and AD9522 data sheets and software documenta­tion available at www.analog.com.

AD9522 EVALUATION BOARD

Figure 1.

Please see the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 16

UG-077 Evaluation Board User Guide

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

General Description ......................................................................... 1

AD9522 Evaluation Board ............................................................... 1

Revision History ............................................................................... 2

Evaluation Board Hardware ............................................................ 3

Power and PC Connections ........................................................ 3

Signal Connections ...................................................................... 3

Bypassing the Wall Power Supply ............................................... 3

Bypassing the PLL (Clock Distribution Only) ............................. 3

Using an External VCXO ............................................................ 3

Using I2C Serial Port Mode ......................................................... 3

Evaluation Board Software .............................................................. 4

Software Installation .................................................................... 4

Running the Software .................................................................. 4

Quick Start Guide to the AD9522 PLL .......................................... 5

Evaluation Software Components .................................................. 7

Main Window ............................................................................... 7

PLL Reference Input Window .................................................... 8

PLL Configuration Window (Config PLL) ............................... 8

REFMON, STATUS, and LD Buttons ........................................ 9

Register W/R Box ......................................................................... 9

SYNC, PD (Power Down), and RESET Buttons....................... 9

EEPROM Control Window ........................................................ 9

Reference (R) Divider Window ...................................................9

Feedback (N) Divider Window ................................................ 10

R and N Delay Window ............................................................. 10

Phase Frequency Detector (PFD) Window ............................ 10

Charge Pump Window .............................................................. 11

Zero Delay Window ................................................................... 11

VCO Calibration Window ........................................................ 11

Channel Divider Window ......................................................... 11

Output Driver Window ............................................................. 12

Debug Window ........................................................................... 12

Evaluation Software Menu Items.................................................. 13

Menu Bar ..................................................................................... 13

File Menu ................................................................................. 13

I/O Menu ................................................................................. 13

View Menu .............................................................................. 13

Operational Modes Menu ..................................................... 13

Help Menu ............................................................................... 13

AD9522 PLL Loop Filter ............................................................... 14

Using the Evaluation Board to Program an AD9522 on a User

Board ................................................................................................ 15

AD9522 Binary File Generation ................................................... 16

Checksum Generation ............................................................... 16

Avoiding Checksum Mismatches ............................................. 16

ESD Caution................................................................................ 16

REVISION HISTORY

1/10—Revision 0: Initial Version

Rev. 0 | Page 2 of 16