AD8313

Rev. D | Page 2 of 24

TABLE OF CONTENTS

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

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

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

Pin Configurations and Function Description............................. 7

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

Circuit Description......................................................................... 11

Interfaces.......................................................................................... 13

Power-Down Interface, PWDN................................................ 13

Signal Inputs, INHI, INLO ........................................................ 13

Logarithmic/Error Output, VOUT .......................................... 13

Setpoint Interface, VSET............................................................ 14

Applications..................................................................................... 15

Basic Connections for Log (RSSI) Mode................................. 15

Operating in Controller Mode ................................................. 15

Input Coupling ........................................................................... 16

Narrow-Band LC Matching Example at 100 MHz ................ 16

Adjusting the Log Slope............................................................. 18

Increasing Output Current........................................................ 19

Effect of Waveform Type on Intercept..................................... 19

Evaluation Board ............................................................................ 20

Schematic and Layout................................................................ 20

General Operation ..................................................................... 20

Using the AD8009 Operational Amplifier .............................. 20

Varying the Logarithmic Slope................................................. 20

Operating in Controller Mode ................................................. 20

RF Burst Response ..................................................................... 20

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

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

REVISION HISTORY

6/04—Data Sheet Changed from Rev. C to Rev. D

Updated Evaluation Board Section .............................................. 21

2/03—Data Sheet changed from Rev. B to Rev. C

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

Edits to SPECIFICATIONS............................................................. 2

Updated ESD CAUTION ................................................................ 4

Updated OUTLINE DIMENSIONS .............................................. 7

8/99—Data Sheet changed from Rev. A to Rev. B

5/99—Data Sheet changed from Rev. 0 to Rev. A

8/98—Revision 0: Initial Version