AD9540

Rev. 0 | Page 2 of 32

TABLE OF CONTENTS

Product Overview............................................................................. 3

Specifications..................................................................................... 4

Loop Measurement Conditions.................................................. 9

Absolute Maximum Ratings.......................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

Typical Performance Characteristics ........................................... 13

Typical Application Circuits.......................................................... 18

Application Circuit Descriptions ............................................. 18

General Description ....................................................................... 19

PLL Circuitry .............................................................................. 19

CML Driver ................................................................................. 19

DDS and DAC ............................................................................ 20

Modes of Operation ....................................................................... 21

Selectable Clock Frequencies and Selectable Edge Delay ..... 21

Synchronization Modes for Multiple Devices.............................. 21

Serial Port Operation ..................................................................... 22

Instruction Byte .......................................................................... 23

Serial Interface Port Pin Description....................................... 23

MSB/LSB Transfers .................................................................... 23

Register Map and Description ...................................................... 24

Control Function Register Descriptions ................................. 27

Outline Dimensions ....................................................................... 32

Ordering Guide .......................................................................... 32

REVISION HISTORY

7/04—Revision 0: Initial Version