AD9858

Rev. C | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

Electrical Specifications ................................................................... 3

 

Absolute Maximum Ratings............................................................ 6

 

Thermal Performance.................................................................. 6

 

Explanation of Test Levels ........................................................... 6

 

ESD Caution.................................................................................. 6

 

Pin Configuration and Function Descriptions............................. 7

 

Typical Performance Characteristics ............................................. 9

 

Theory of Operation ...................................................................... 14

 

Component Blocks..................................................................... 14

 

Modes of Operation ................................................................... 16

 

Synchronization.......................................................................... 18

 

Programming the AD9858........................................................ 19

 

Register Map ................................................................................... 22

 

Register Bit Descriptions........................................................... 23

 

Other Registers ........................................................................... 25

 

User Profile Registers................................................................. 25

 

Applications Information .............................................................. 27

 

Evaluation Boards ...................................................................... 28

 

Outline Dimensions ....................................................................... 29

 

Warning ....................................................................................... 29

 

Ordering Guide .......................................................................... 29

 

REVISION HISTORY

2/09—Rev. B to Rev. C

Changes to Features Section, General Description Section, and

Figure 1 .............................................................................................. 1

Changes to Table 1............................................................................ 3

Changes to Table 2............................................................................ 6

Added Thermal Performance Section ........................................... 6

Changes to Figure 3, Figure 4, and Figure 5.................................. 9

Changes to Figure 9, Figure 10 Caption, Figure 11 Caption,

Figure 13, and Figure 14 ................................................................ 10

Changes to Figure 17...................................................................... 11

Changes to Theory of Operation Section and DAC Output

Section.............................................................................................. 14

Changes to Charge Pump Section................................................ 15

Changes to Modes of Operation Section..................................... 16

Changes to Single-Tone Mode Section and Frequency Sweeping

Mode Section................................................................................... 17

Changes to SYNCLK and FUD Pins Section and Figure 33..... 18

Changes to I/O Port Functionality Section, Parallel

Programming Mode Section, and Figure 35............................... 20

Changes to Figure 36 and Serial Programming

Mode Section................................................................................... 21

Changes to Table 6.......................................................................... 22

Changes to Control Function Register (CFR) Section .............. 23

Changes to CFR[21]: Load Delta Frequency Timer Section .... 24

Changed CFR[14]: Sine/Cosine Select Bit Section to CFR[14]:

Enable Sine Output Bit Section..................................................... 24

Changes to Delta Frequency Tuning Word (DFTW) Section,

Delta Frequency Ramp Rate Word (DFRRW) Section, and

Phase Offset Control Section........................................................ 25

Changes to Profile Selection Section ........................................... 26

Deleted Frequency Tuning Control Section ............................... 27

Changed AD9858 Application Suggestions Section to

Applications Information Section ................................................ 27

Changes to Table 13 ....................................................................... 28

Added Exposed Paddle Notation to Outline Dimensions ........ 29

4/07—Rev. A to Rev. B

Changed EPAD to TQFP_EP............................................Universal

Updated Outline Dimensions....................................................... 31

11/03—Rev. 0 to Rev. A

Changes to Specifications.................................................................5

Moved ESD Caution to .....................................................................6

Moved Pin Configuration to............................................................7

Moved Pin Function Description to ...............................................8

Changes to Equations .................................................................... 19

Changes to Delta Frequency Ramp Rate Word (DFRRW)....... 27

4/03—Revision 0: Initial Version