LM4562: Non-linearity of LM4562

cyril wilkin

Prodigy 30 points

Part Number: LM4562

The above is an extract from AN 1671 published by National Semiconductor and written by Bob Pease on the LM4562,

How can the non-linearity when used as a unity gain follower be improved?

over 5 years ago

0 Wenbin Li1 over 5 years ago

TI__Expert 8400 points

Dear customer,

I can't see your figure. so I can't understand your question.

can you help to update the figure again and check it?

thanks a lot.

Br,

Wenbin

0 cyril wilkin over 5 years ago in reply to Wenbin Li1

Prodigy 30 points

Thanks for the response. I cannot upload the relevant file. Please download National Semiconductor's AN1671 by Robert Pease and look at the paragraph

heading - Distortion as a Non-Inverting Amplifier ( Unity-Gain follower). "....If you are using an amplifier as a unity-gain follower, the LM4562 does have some

non-linearity but this can be improved. Write to request advice"

Thanks

Cyril Wilkin

0 Wenbin Li1 over 5 years ago in reply to cyril wilkin

TI__Expert 8400 points

Hi Cyril Wilkin,

I have get the file .

i'm checking with the team whether they have the details on how to improve the non-linearity.

Br,

Wenbin

0 Wenbin Li1 over 5 years ago in reply to Wenbin Li1

TI__Expert 8400 points

Hi Cyril Wilkin,

Unfortunately we don’t have much information about this nonlinearity. The non-linearity behavior seems to be related to the connected load and the saturation level. This is the only document that I could find related to this.

https://www.analog.com/media/en/training-seminars/tutorials/MT-044.pdf

Let me know if you have questions or comments.

Br,

Wenbin

0 cyril wilkin over 5 years ago in reply to Wenbin Li1

Prodigy 30 points

Thanks Wenbin Li1.

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LM4562: Non-linearity of LM4562