Data Sheet

ADA4530-1

TABLE OF CONTENTS

analog.com

Rev. C | 2 of 52

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

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

Pin Connection Diagram........................................1

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

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

5 V Nominal Electrical Characteristics............... 3

10 V Nominal Electrical Characteristics............. 4

15 V Nominal Electrical Characteristics............. 6

Absolute Maximum Ratings...................................9

Thermal Resistance........................................... 9

ESD Caution.......................................................9

Pin Configuration and Function Descriptions...... 10

Typical Performance Characteristics .................. 11

Main Amplifier, DC Performance ..................... 11

Main Amplifier, AC Performance...................... 20

Guard Amplifier................................................ 26

Theory of Operation.............................................28

ESD Structure.................................................. 28

Input Stage.......................................................28

Gain Stage....................................................... 29

Output Stage.................................................... 29

Guard Buffer.....................................................29

Applications Information...................................... 30

Input Protection................................................ 30

Single-Supply and Rail-to-Rail Output..............30

Capacitive Load Stability..................................30

EMI Rejection Ratio..........................................31

High Impedance Measurements..........................32

Input Bias Current............................................ 32

Input Resistance...............................................33

Input Offset Voltage..........................................33

Insulation Resistance....................................... 33

Guarding...........................................................34

Dielectric Relaxation.........................................34

Humidity Effects .............................................. 35

Contamination.................................................. 37

Cleaning and Handling.....................................38

Solder Paste Selection.....................................38

Current Noise Considerations............................. 39

Layout Guidelines................................................42

Physical Implementation of Guarding

Techniques..................................................... 42

Guard Ring.......................................................42

Guard Plane..................................................... 42

Via Fence......................................................... 43

Cables and Connectors....................................43

Electrostatic Interferance .................................43

Photodiode Interface........................................... 44

DC Error Analysis.............................................44

AC Error Analysis............................................. 44

Noise Analysis..................................................45

Design Recommendations............................... 46

Design Example .............................................. 46

Power Supply Recommendations....................... 49

Power Supply Considerations.......................... 49

Long-Term Drift.................................................50

Temperature Hysteresis................................... 50

Outline Dimensions............................................. 52

Ordering Guide ................................................52

Evaluation Boards............................................ 52

REVISION HISTORY

2/2024—Rev. B to Rev. C

Changes to Cleaning and Handling Section.................................................................................................. 38