OPA4170-Q1: Different between OPA4170-Q1 and nonQ1 product

Daisuke Higa

Part Number: OPA4170-Q1
Other Parts Discussed in Thread: OPA4170, OPA4991-Q1

I have asked from my customer regarding difference between OPA4170-Q1 and nonQ1 product.

I recognize the difference difference between OPA4170-Q1 and nonQ1 product is specification of IB and Ios.
I reqognize non Q1 product(OPAx170) is all the same spec of IB and Ios, is it right?
Could you tell me why is different only OPA4170-Q1?

OPA4170(non Q1)

OPA4170-Q1

Best regards,
Higa

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 280950 points

Apparently, the OPA4170-Q1 uses a different die with ESD protection diodes with a higher leakage current.

0 Robert Clifton56 over 3 years ago in reply to Clemens Ladisch

TI__Mastermind 23830 points

Hello Higa-san,

I suspect Clemens is right but I will investigate this to confirm!

Best Regards,

Robert Clifton

0 Robert Clifton56 over 3 years ago in reply to Robert Clifton56

TI__Mastermind 23830 points

Hi Higa-san,

Just to provide an update, we are still continuing to investigate this and should have an answer to you soon!

Best Regards,

Robert Clifton

0 Daisuke Higa over 3 years ago in reply to Robert Clifton56

Genius 3805 points

Hi Clifton-san

Thank you for confirming.

If you have an update about it, please let me know.

Regards,

Higa

0 Robert Clifton56 over 3 years ago in reply to Daisuke Higa

TI__Mastermind 23830 points

Hi Higa-san,

Of course! The team is still investigating this. I apologize for the wait.

Best Regards,

Robert Clifton

0 Daisuke Higa over 3 years ago in reply to Robert Clifton56

Genius 3805 points

Hi Clifton-san

I'm sorry to hurry, but I'm being urged by a customer, so could you please reply as soon as possible?

Regards,

Higa

+1 Robert Clifton56 over 3 years ago in reply to Daisuke Higa

TI__Mastermind 23830 points

Hi Higa-san,

We have a difference as a result of the more rigorous qualifications done for automotive. To ensure we stay within spec we have the bias current at higher max rating.

If this bias current difference is a concern I can recommend you to some of our other automotive devices, such as the OPA4991-Q1.

Best Regards,

Robert Clifton

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Amplifiers forum

OPA4170-Q1: Different between OPA4170-Q1 and nonQ1 product