AD8318(2006) View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD8318
(Rev.:2006)

1 MHz to 8 GHz, 60 dB Logarithmic Detector/Controller

Analog Devices 

AD8318

TABLE OF CONTENTS

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

Temperature Compensation of Output Voltage..........................13

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

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

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

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

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

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

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

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

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..............................................................................19

Characterization Setup and Methods...........................................21

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

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

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

REVISION HISTORY

1/06—Rev. 0 to Rev. A

Changed TADJ Resistor to RTADJ Resistor....................Universal

Changes to Applications .................................................................. 1

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

Changes to Figure 5, Figure 6, and Figure 7 Captions................. 8

Changes to Figure 12 Caption......................................................... 9

Changes to Figure 15 Caption......................................................... 9

Changed General Description Heading to

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

Changes to Enable Interface Section............................................ 12

Inserted Figure 24........................................................................... 12

Changes to Input Signal Coupling Section ................................. 12

Changes to Measurement Mode Section..................................... 14

Changes to Figure 36...................................................................... 17

Added Output Filtering Section ................................................... 19

Changes to Controller Mode Section........................................... 19

Changes to Response Time Capability Section .......................... 18

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

Changes to Figure 47, Figure 48, and Figure 49 ......................... 23

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

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

7/04—Rev. 0: Initial Version

Rev. A | Page 2 of 24

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