Data Sheet

AD8318

TABLE OF CONTENTS

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Rev. E | 2 of 24

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

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

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

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

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

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

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

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

Typical Performance Characteristics..................... 8

Theory of Operation.............................................11

Using the AD8318............................................... 12

Basic Connections............................................12

Enable Interface............................................... 12

Input Signal Coupling....................................... 12

Output Interface................................................13

Setpoint Interface............................................. 13

Temperature Compensation of Output

Voltage........................................................... 13

Temperature Sensor.........................................14

Measurement Mode......................................... 14

Device Calibration and Error Calculation......... 15

Selecting Calibration Points to Improve

Accuracy Over a Reduced Range..................16

Variation in Temperature Drift From Device

to Device........................................................ 17

Temperature Drift at Different Temperatures.... 17

Setting the Output Slope in Measurement

Mode.............................................................. 17

Response Time Capability............................... 18

Output Filtering.................................................18

Controller Mode................................................18

Characterization Setup and Methods............... 20

Evaluation Board................................................. 22

Outline Dimensions............................................. 24

Ordering Guide.................................................24

Evaluation Boards............................................ 24

REVISION HISTORY

12/2022—Rev. D to Rev. E

Change to Figure 23...................................................................................................................................... 12

Changes to Figure 37.................................................................................................................................... 17

Changes to Figure 43.................................................................................................................................... 19

Updated Outline Dimensions......................................................................................................................... 24

Changes to Ordering Guide........................................................................................................................... 24