Datasheet

AD5680
Rev. A | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Product Highlights ........................................................................... 1
Related Devices................................................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Characteristics ................................................................ 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Ter mi nol og y .................................................................................... 10
Theory of Operation ...................................................................... 11
DAC Section................................................................................ 11
Resistor String............................................................................. 11
Output Amplifier........................................................................ 11
Interpolator Architecture .......................................................... 11
Serial Interface............................................................................ 12
Input Shift Register .................................................................... 12
SYNC
Interrupt .......................................................................... 12
Power-On Reset .......................................................................... 12
Microprocessor Interfacing....................................................... 13
Applications..................................................................................... 14
Closed-Loop Applications ........................................................ 14
Filter ............................................................................................. 14
Choosing a Reference for the AD5680.................................... 15
Using a Reference as a Power Supply for the AD5680 .......... 16
Using the AD5680 with a Galvanically Isolated Interface .... 16
Power Supply Bypassing and Grounding................................ 16
Outline Dimensions....................................................................... 17
Ordering Guide .......................................................................... 17
REVISION HISTORY
3/07—Rev. 0 to Rev. A
Changes to Input Shift Register Section...................................... 12
Changes to Figure 25...................................................................... 12
6/06—Revision 0: Initial Version