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AD8305ACPZ-R2

100 dB Range (10 nA to 1 mA) Logarithmic Converter

Analog Devices 

AD8305

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

General Structure ........................................................................... 11

Theory.......................................................................................... 11

REVISION HISTORY

9/2017—Rev. B to Rev. C

Changed CP-16-2 to CP-16-27 .................................... Throughout

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

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

4/2010—Rev. A to Rev. B

Updated Data Sheet............................................................Universal

Change to Figure 2 and Table 3 ...................................................... 5

Added Power Supply Sequencing Section................................... 12

Added Figure 34; Renumbered Sequentially .............................. 12

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

3/2003—Rev. 0 to Rev. A

Changes to TPC 3 ............................................................................. 4

Changes to TPC 18 ........................................................................... 6

Changes to Figure 3 ........................................................................ 11

Changes to Figure 8 ........................................................................ 13

Updated Outline Dimensions ....................................................... 18

Data Sheet

Managing Intercept and Slope.................................................. 12

Response Time and Noise Considerations ............................. 12

Power Supply Sequencing ......................................................... 12

Applications Information .............................................................. 14

Calibration....................................................................................... 15

Using a Negative Supply ................................................................ 16

Log-Ratio Applications.................................................................. 17

Reversing the Input Polarity ........................................................ 18

Characterization Methods............................................................. 19

Evaluation Board ............................................................................ 21

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

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

Rev. C | Page 2 of 24

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