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Original question:

OPA2340 input voltage offset temperature drift max

OPA2340: OPA2340 typical input voltage offset temperature drift

Massimo Luchi
Prodigy 195 points
Part Number: OPA2340

Hello,

I have a question about the typical value of Input Voltage Offset Drift that, I know, it is related to the standard deviation of distribution.

In the datasheet I have found it is 2.5uV/°C, but following the method shown here:

https://e2e.ti.com/support/amplifiers/f/14/t/199595

it has been estimated that the value should be around 4uV/°C.

Why are they different?

Thanks,

Massimo

  • 0
    Guru 47485 points

    Well Massimo, 

    The typ spec entry for the OPA2340 has not apparently taken advantage of the excellent review you inserted from Marek Lis. Behind every spec table number is a person - not always with the same expertise exhibited by Marek's reply - use 4uV/C as per his review regardless of the typ spec. 

    Also, you might note that typ specs are kind of an odd combination of physical reality and marketing largess. 

  • 0 in reply to Michael Steffes
    Prodigy 195 points

    Thank you very much Michael for your fast reply, I will keep your consideration in mind for the future.

    I' m going to ask you some clarifications on similar topic, but since the Op Amp is different, I will create a new thread. 

    Regards,

    Massimo