AD5624R/AD5644R/AD5664R

Rev. A | Page 2 of 28

TABLE OF CONTENTS

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

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

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

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

Product Highlights ........................................................................... 1

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

Specifications..................................................................................... 3

AD5624R-5/AD5644R-5/AD5664R-5 ....................................... 3

AD5624R-3/AD5644R-3/AD5664R-3 ....................................... 5

AC Characteristics........................................................................ 6

Timing Characteristics ................................................................ 7

Timing Diagram ........................................................................... 7

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions............................. 9

Typical Performance Characteristics ........................................... 10

Terminology .................................................................................... 18

Theory of Operation ...................................................................... 20

D/A Section................................................................................. 20

Resistor String ............................................................................. 20

Output Amplifier........................................................................ 20

Internal Reference ...................................................................... 20

External Reference ..................................................................... 20

Serial Interface ............................................................................ 20

Input Shift Register .................................................................... 21

SYNC Interrupt .......................................................................... 21

Power-On Reset.......................................................................... 22

Software Reset............................................................................. 22

Power-Down Modes .................................................................. 22

LDAC Function........................................................................... 23

Internal Reference Setup ........................................................... 23

Microprocessor Interfacing....................................................... 24

Applications..................................................................................... 25

Using a Reference as a Power Supply for the

AD5624R/AD5644R/AD5664R ............................................... 25

Bipolar Operation

Using the AD5624R/AD5644R/AD5664R ............................. 25

Using AD5624R/AD5644R/AD5664R

with a Galvanically Isolated Interface...................................... 25

Power Supply Bypassing and Grounding................................ 26

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 28

REVISION HISTORY

11/06—Rev. 0 to Rev A

Changes to Reference Output Parameter in Table 2 .................... 3

Changes to Reference Output Parameter in Table 3 .................... 5

Added Note to Figure 3.................................................................... 9

4/06—Revision 0: Initial Version