OPA4197: Faster precision op-amp than the OPAx197

Jean Debarros

Prodigy 90 points

Part Number: OPA4197
Other Parts Discussed in Thread: OPA828, OPA4228, OPA189

Hi,

I'm after a faster precision op-amp than the OPAx197.

I'm after:

Ideally = offset < 1 mV ; 30 MHz ; Supply = +-15 V & +-12 at least - Quad package

Thanks

over 5 years ago

0 Marek Lis over 5 years ago

TI__Guru 60610 points

Jean,
OPA828 with GBP of 50MHz and Vos of +/-150uV would be the fastest precision op amp but OPA189 (GBP of 14MHz) has highest precision of max Vos of +/-3uV. Hoever, neither one comes as a quad package. For higher bandwith quad version, we have only OPA4228 with GBP of 33MHz and max Vos of +/-200uV but it requires a minimum gain of 5 to be stable.

0 Jean Debarros over 5 years ago in reply to Marek Lis

Prodigy 90 points

Hi Marek,
Thank you so much for your help on this; I've chosen the OPA828 as per your recommandation; does better than I needed!!
Also, I have posted a new message related to the input capacitance of the OPA828; could you help on this please?

0 Dennis Goeke over 5 years ago in reply to Jean Debarros

TI__Genius 11135 points

Jean

It appears that this answered your question. If you need more help with this issue just post another reply below.

Thanks
Dennis

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OPA4197: Faster precision op-amp than the OPAx197