Datasheet
AD7846
Rev. G | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
AC Performance Characteristics ................................................ 4
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings ............................................................ 6
ESD Caution .................................................................................. 6
Pin Configurations and Function Descriptions ........................... 7
Typical Performance Characteristics ............................................. 8
Terminology .................................................................................... 10
Circuit Description ......................................................................... 11
Digital Section ............................................................................. 11
Digital-to-Analog Conversion .................................................. 11
Output Stage ................................................................................ 12
Unipolar Binary Operation ........................................................... 13
Bipolar Operation ........................................................................... 14
Multiplying Operation ............................................................... 14
Position Measurement Application .............................................. 15
Microprocessor Interfacing ........................................................... 16
AD7846-to-8086 Interface ........................................................ 16
AD7846-to-MC68000 Interface ............................................... 16
Digital Feedthrough ....................................................................... 17
Application Hints ........................................................................... 18
Noise ............................................................................................ 18
Grounding ................................................................................... 18
Printed Circuit Board Layout ................................................... 18
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 22
REVISION HISTORY
4/10—Rev. F to Rev. G
Change to Figure 1 ........................................................................... 1
12/09—Rev. E to Rev. F
Updated Format .................................................................. Universal
Changes to Table 4 ............................................................................ 6
Deleted Other Output Voltage Ranges Section ............................ 9
Deleted Figure 20 and Table 5; Renumbered Sequentially ......... 9
Deleted Test Application Section and Figure 21 ........................ 10
Deleted Figure 29 to Figure 31 ...................................................... 14
Changes to Printed Circuit Board Layout Section ..................... 18
Updated Outline Dimensions ....................................................... 20
Changes to Ordering Guide .......................................................... 22