OPA2188: OPA2188 Failure Modes

Chau Brown

Part Number: OPA2188

Is it credible for an OPA2188 op-amp output to fail directly to its V+ positive supply or to its V- negative supply due to op-amp's failure mechanism such as random component failure, workmanship, ESD, latent defect?

over 1 year ago

0 Art Kay over 1 year ago

TI__Mastermind 22307 points

Chau,

Yes, this is possible. For example, if a signal damaged the input transistors the amplifier could be open-loop and the output would drive to the rail. There are probably other mechanisms that could make this happen. Below are some videos covering the topic. The video provides details on how to modify circuits to make them more robust.

ESD introduction

Electrical overstress introduction

Overstress protection

Selecting components for electrical overstress

I hope this helps.

Best regards, Art

Amplifiers

Amplifiers forum

OPA2188: OPA2188 Failure Modes