OPA2251: Is there any diode between +INx and -INx terminals of OPA2251 like OPA2187 inputs?

Kazuya Nakai59

Guru 20080 points

Part Number: OPA2251
Other Parts Discussed in Thread: OPA2187

Hello guys,

One of my customers is considering using OPA2251 for their new products.

At this moment, they have the following questions. Could you please give me your reply for them?

Q. Is there any diode between +INx and -INx terminals of OPA2251 like OPA2187 inputs?

We need MUX friendly high voltage op-amp.

Your reply would be much appreciated.

Kazuya.

0 Thomas Kuehl over 2 years ago

Hello Kazuya,

I have located the original OPA2251 design review schematic and is does not show any back-to-back clamping diodes between the two inputs.

Regards, Thomas

Precision Amplifiers Applications Engineering

0 Kazuya Nakai59 over 2 years ago in reply to Thomas Kuehl

Guru 20080 points

Hello Thomas,

Thank you very much for your reply.

It is very helpful for the customer and me.

Thank you again and best regards,

Kazuya.

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