OPA627: Alternative device for OPA627

Ryo Akashi

Expert 6730 points

Part Number: OPA627
Other Parts Discussed in Thread: OPA827, OPA828

Hello experts,

I plan to use OPA627 for current follower circuit.

But it looks old device.

Is there alternative device for OPA627?

Thanks and best regards,

Ryo Akashi

over 2 years ago

0 Michael Steffes over 2 years ago

Guru 40995 points

Hey Ryo,

I believe the OPA827 was intended as a new century update to the OPA627

http://www.ti.com/lit/ds/symlink/opa827.pdf

0 Thomas Kuehl over 2 years ago

TI__Guru* 89295 points

Akashi-san,

The OPA627 is a legacy high-performance Op amp that provides very high electrical performance overall. Although it should be available for some time to come, TI recognized it that our customers needed a modern, low cost replacement. To meet that need the new OPA828 was developed and is available. The OPA828 product description indicates Low-Offset, Low-Drift, Low-Noise, 45-MHz, 36-V JFET-Input, RRO Operational Amplifier.

You can find all the OPA828 information and a link to its datasheet here:

http://www.ti.com/product/OPA828

Let me know if you have any questions about replacing the OPA627 with the OPA828.

Regards, Thomas

Precision Amplifiers Applications Engineering

0 Ryo Akashi over 2 years ago in reply to Michael Steffes

TI__Expert 6730 points

Hello Michael,

Thank you for your comment.

It looks good. I will check OPA827.

Best regards,

Ryo Akashi

0 Ryo Akashi over 2 years ago in reply to Thomas Kuehl

TI__Expert 6730 points

Hello Thomas,

Thank you very much for your comment.

I understand OPA627 is a legacy Op amp. And OPA828 looks very good.

I will check OPA828 datasheet.

Thanks and best regards,

Ryo Akashi

0 kai klaas69 over 2 years ago in reply to Ryo Akashi

Guru 114805 points

Hi Ryo,

keep in mind that the OPA828 is much faster than the OPA627, 45MHz compared to 16MHz and 150V/µs versus 55V/µs. So, the OPA828 might need extra efforts referring to layout and decoupling.

The OPA627 (still) is a remarkable ultra high quality FET-OPAmp which came to the market in the 90ies, if I remember correctly. We have used this OPAmp in very demanding precision measurement applications at that time.

Kai

0 Michael Steffes over 2 years ago in reply to kai klaas69

Guru 40995 points

I think the OPA627 was about a 1988 introduction - the OPA827 was an initial effort to move the capability to a much newer process - not perfect apparently, the OPA828 is a recent much faster version - it is in fact 100Mhz at gain of 1 with an updated GBP (from this table) to 45Mhz,

Amplifiers

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OPA627: Alternative device for OPA627