OPA656: OPA656 Phase reversal

Takehiro Sato

Intellectual 2765 points

Part Number: OPA656

Hello team,

I have a question. Could you let me know OPA656/7 will occur phase reversal in IN = OUT condition?

Best regard

Sato

over 6 years ago

0 kai klaas69 over 6 years ago

Guru 140200 points

Hi Takehiro,

the input voltage must not exceed the maximum input voltage range. See page 6 of datasheet.

Kai

0 Takehiro Sato over 6 years ago in reply to kai klaas69

TI__Intellectual 2765 points

Hi Kai,
Thank you for reply.
Does the OPA656 not integrate a circuit to protect the phase reversal?

Sato

0 Hasan Babiker31 over 6 years ago in reply to Takehiro Sato

TI__Genius 15565 points

Hey Sato,

Can you clarify further on the condition? Do you mean using the OPA656 as a voltage follower?

Best,
Hasan Babiker

0 Takehiro Sato over 6 years ago in reply to Hasan Babiker31

TI__Intellectual 2765 points

Hi Hasan,

Yes, about using as a voltage follower.
In the following link, that say some opamp has a protect for phase reversal issue by complementary-pair input stages.

Does the OPA656 have protection circuit for phase reversal?

Best regards,

Sato

0 Hasan Babiker31 over 6 years ago in reply to Takehiro Sato

TI__Genius 15565 points

Hello Takehiro,

Phase reversal should not be an issue with this part.

Best,
Hasan Babiker

0 Takehiro Sato over 6 years ago in reply to Hasan Babiker31

TI__Intellectual 2765 points

Hello Hasan,

Thank you for the information.

Sato

Amplifiers

Amplifiers forum

OPA656: OPA656 Phase reversal