Hi, I have a question about OPAMP overload recovery.

Yunsik Chung

Intellectual 1150 points

Hi, I have a question about OPMAP overload recovery in precision lab.

I can understand why there is slew rate limitation in strong overload condition.

But, i don't get why Vos becomes way larger than when it is in linear condition.

Could you explain in more detail why Vos is large in strong overload condition?

over 4 years ago

0 Tim Claycomb over 4 years ago

TI__Genius 15410 points

Hello,

Vos increases when the op amp is in slew rate limit because the inputs of the op amp are being pulled apart during this condition. During slew rate limit the input pins are pulled apart because the output voltage is not changing fast enough to keep the input pins equal to each other due to the slew rate limit of the amplifier. This appears as an increase in offset voltage.

Thank you,

Tim Claycomb

0 Yunsik Chung over 4 years ago in reply to Tim Claycomb

TI__Intellectual 1150 points

Hi Tim,

Thank you very much.

I fully understood it.

Amplifiers

Amplifiers forum

Hi, I have a question about OPAMP overload recovery.