OPA656: Please tell me the difference between the parts numbers.

akira.ono

Part Number: OPA656
Other Parts Discussed in Thread: OPA814

Hi TI teams,

I received notification that OPA656U/2K5 will be discontinued, TI's recommended replacement part is OPA656UB/2K5.
What does “B” in this Parts number mean?
I checked the Datasheet, but I couldn't tell the difference.

Thanks and Best Regards,

Akira Ono

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 292600 points

Section 7.6 specifies high-grade values. Section 9.1.3.5 mentions that B devices are the high-grade version.

0 akira.ono over 1 year ago in reply to Clemens Ladisch

Prodigy 60 points

Thanks for feedback.

I checked the points you pointed out and understood that B devices are High-Grade-Version.
Am I correct in my understanding that OPA656U/2K5 and OPA656UB/2K5 use the same die? Is OPA656U/2K5 the part that was removed from the test due to stricter test conditions?

Best Regards,

+1 Clemens Ladisch over 1 year ago in reply to akira.ono

Guru 292600 points

Yes, it's the same die. Apparently, having two different test is more expensive than just doing the stricter test.

0 Michael Steffes over 1 year ago in reply to akira.ono

Guru 48395 points

It seems the OPA814 was developed to allow a drop in replacement

0 akira.ono over 1 year ago in reply to Michael Steffes

Prodigy 60 points

Thanks for reply.

I will refer to OPA814. I plan on using high quality products.

0 Nick Nauman over 1 year ago in reply to akira.ono

TI__Expert 6050 points

Hi,

OPA814 is a good replacement as Michael has pointed out. Please feel free to reach out if you have any additional questions about that device.

Thanks,

Nick

Amplifiers

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OPA656: Please tell me the difference between the parts numbers.