OPA196: Absolute Circuit

user6083619

Part Number: OPA196

Hi, TI.

I am currently designing an absolute value circuit while looking at JAJA204.
However, if the input voltage is negative, the output voltage will not drop to 0V.
How can I reduce it to 0V?

Sincerely.

Yuzuru

over 5 years ago

0 Raymond Zhang1 over 5 years ago

TI__Guru* 77541 points

Hi Yuzuru-san,

Do you mean that you want half rectifier like the image below?

Here is the full rectifier circuit

/cfs-file/__key/communityserver-discussions-components-files/14/ABS1-E2E-full-rectifier-10152020.TSC

Or remove your -5V at OPA196

Here is a simpler one without diode for full rectification:

Please let us know if this is what you want.

Best,

Raymond

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Yuzuru,

it's not quite clear to me what you mean. But maybe you should take a small signal Schottky diode and not a 1A Schottky rectifier:

yuzuru_opa196.TSC

Kai

0 user6083619 over 5 years ago in reply to Raymond Zhang1

Prodigy 180 points

Hi, Raymond

Sorry for my inadequate explanation.

Your circuits is my intention.

Thank you for your kind reply.

Sincerely.

Yuzuru

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OPA196: Absolute Circuit