AD9540

Data Sheet

Rev. C | Page 2 of 32

TABLE OF CONTENTS

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

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

Functional Block Diagram .............................................................. 1

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

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

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

Loop Measurement Conditions.................................................. 8

Absolute Maximum Ratings............................................................ 9

ESD Caution.................................................................................. 9

Pin Configuration and Function Descriptions........................... 10

Typical Performance Characteristics ........................................... 12

Typical Application Circuits.......................................................... 17

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

Theory of Operation ...................................................................... 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 Register Bit Descriptions............................................ 27

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

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

REVISION HISTORY

4/2018—Rev. B to Rev. C

Changes to Figure 3........................................................................ 10

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

Changes to Ordering Guide .......................................................... 32

9/2016—Rev. A to Rev. B

Change to Features ........................................................................... 1

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

Changes to Ordering Guide .......................................................... 32

2/2006—Rev. 0 to Rev. A

Changes to Features Section ............................................................1

Changes to Applications Section.....................................................1

Changes to Functional Block Diagram...........................................1

Changes to Table 1.............................................................................4

Changes to Typical Application Circuits Section....................... 17

Updates to Ordering Guide........................................................... 32

7/2004—Revision 0: Initial Version