SPVA018
August 2025
LM2904B
1
Abstract
Trademarks
1
Introduction
2
ESD Overview
2.1
What is Electrostatic Discharge?
2.1.1
ESD Cell Robustness in Semiconductors
3
Types of ESD Cells
3.1
Dual Diode Configuration
3.1.1
Why Not Always Use Dual Diode Configuration?
3.2
Bootstrapped Diodes
3.3
Absorption Devices
3.3.1
Active Clamps
3.3.2
GCNMOS Clamps
3.4
Silicon Controlled Rectifiers
3.5
CER and ECR NPN Diodes
3.5.1
Measuring the Response of an ECR and CER ESD Cell
3.6
Comparison of ESD Cells
4
How to Determine the ESD Structure of the Device from the Data Sheet
5
How to Protect The System from In Circuit ESD/EOS Events
5.1
Using TVS Diodes and Series Resistance for Circuit Protection
5.2
Using Schottky Diodes for Circuit Protection
6
How to Test an Op Amp in a System Level Circuit
6.1
ESD Protection Cell Advancements Over the Years
7
Summary
8
References
Application Note
How to Protect Op amps from Electrostatic Discharge & Electrical Overstress Damage