OPA855: OPA855

?? ?

Part Number: OPA855

Tool/software:

Hi,

I am using the OPA855 to create a inverted proportional amplification circuit, but the output signal is behaving strangely. What could be the issue? I am using LTspice software, and the output node is between C3 and R11.

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 318050 points

The voltages are outside or the ranges that this device could handle. I do not know how the model simulates this.

What are the input and output voltage ranges that you actually need?

0 Michael Steffes over 1 year ago

Guru 48395 points

Also, those resistor values are way too high for a part this fast, can you attach your LTSpice files - .asc and symbol file

0 ?? ? over 1 year ago in reply to Clemens Ladisch

Prodigy 20 points

Thanks for your reply. My input voltage is in the range of uV, ns-level voltage, and I expect it to be amplified by around ten times.

0 ?? ? over 1 year ago in reply to Michael Steffes

Prodigy 20 points

sorry,I do not konw how to upload my .asc and symbol file now

0 ?? ? over 1 year ago in reply to ?? ?

Prodigy 20 points

I tried dragging these files into the chat box, but there was no response. This is strange because I upload images in this way.

0 Clemens Ladisch over 1 year ago in reply to ?? ?

Guru 318050 points

Please specify the minimum and maximum voltages at the inputs and the output.

Use "Insert" / "File" in the menu below the text box.

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OPA855: OPA855