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OPA857: Gain switching time?

Gregory Duperon
Expert 7600 points
Part Number: OPA857


I see that we can control the transimpedance gain by pulling CTRL pin logic high or low.

Can this be done, dynamically?

If so, what is the switching time?

Thanks.

  • 0
    TI__Expert 8670 points

    HI, 

    Yes, the pin can be changed dynamically, but you will likely see significant transients during the switching. We didn't explicitly characterize the switching time for this device, but I would expect an order of 10s to 100s of ns depending on what level of settling accuracy you are looking for. 

    Regards,