AD8307 View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD8307

Low Cost, DC to 500 MHz, 92 dB Logarithmic Amplifier

Analog Devices 

AD8307

TABLE OF CONTENTS

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

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

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

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

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

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

Absolute Maximum Ratings............................................................ 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

Log Amp Theory .............................................................................. 9

Progressive Compression .......................................................... 10

Demodulating Log Amps .......................................................... 11

Intercept Calibration .................................................................. 12

Offset Control ............................................................................. 12

Extension of Range..................................................................... 13

Interfaces.......................................................................................... 14

REVISION HISTORY

9/15—Rev. D to Rev. E

Changes to General Description Section ...................................... 1

Added Table 1; Renumbered Sequentially .................................... 1

7/08—Rev. C to Rev. D

Deleted DC-Coupled Applications Section ................................ 22

Deleted Operation Above 500 MHz Section .............................. 23

Updated Outline Dimensions ....................................................... 23

10/06—Rev. B to Rev. C

Updated Format..................................................................Universal

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

Changes to Table 3............................................................................ 5

Data Sheet

Enable Interface .......................................................................... 14

Input Interface ............................................................................ 14

Offset Interface ........................................................................... 15

Output Interface ......................................................................... 15

Theory of Operation ...................................................................... 17

Basic Connections...................................................................... 17

Input Matching ........................................................................... 18

Narrow-Band Matching ............................................................ 18

Slope and Intercept Adjustments ............................................. 19

Applications Information .............................................................. 20

Buffered Output.......................................................................... 20

Four-Pole Filter........................................................................... 20

1 μW to 1 kW 50 Ω Power Meter............................................. 21

Measurement System with 120 dB Dynamic Range.............. 21

Operation at Low Frequencies.................................................. 22

Outline Dimensions ....................................................................... 23

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

Changes to Offset Interface........................................................... 15

Changes to Output Interface......................................................... 15

Updated captions to Outline Dimensions................................... 24

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

6/03—Rev. A to Rev. B

Renumbered TPCs and Figures........................................Universal

Changes to Ordering Guide .............................................................3

Changes to Figure 24...................................................................... 17

Deleted Evaluation Board Information ....................................... 18

Updated Outline Dimensions ....................................................... 19

Rev. E | Page 2 of 24

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