Data Sheet

AD8313

TABLE OF CONTENTS

analog.com

Rev. F | 2 of 23

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

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

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

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

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

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

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

Pin Configuration 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..................................13

Applications Information...................................... 15

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

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

Input Coupling.................................................. 15

Narrow-Band LC Matching Example at 100

MHz................................................................ 16

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

Increasing Output Current................................ 18

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............................................. 23

Ordering Guide.................................................23

Evaluation Boards............................................ 23

REVISION HISTORY

8/2023—Rev. E to Rev. F

Changes to Figure 18 Caption, Figure 19 Caption, and Figure 20 Caption...................................................10

Change to Narrow-Band LC Matching Example at 100 MHz Section............................................................16

Changes to Ordering Guide........................................................................................................................... 23

Changes to Evaluation Boards...................................................................................................................... 23