ADN8810 pulsed operation

Hi,

I would like to use ADN8810 in pulsed mode, with response time faster than what can be achieved using the SB pin which is 6us. I need to bring the response time close to 0.1us and I was looking if the ENCOMP pin can be used for this purpose. There is practically no information in the datasheet about this pin. Any other options?

Thank you!

Ben

  • Dear Ben,

    ADN8810 is a good programmable current source for CW laser bias application.

    It is not optimized for laser diode pulsed driving application.

    ENCOMP pin switches in and out an internal 8pF capacitor by pull it HIGH and LOW to compensate output opamp and the feedback loop stability when does the device output trim. After done the device trim, we always recommend ENCOMP pin connected to Vss.

    You might have to consider other circuitry to work with ADN8810 or other device to satisfy your pulse applications target.

    For example, AD9665 might be a device good for your pulse application.

    Best Regards,

    Dongfeng

  • 0
    •  Analog Employees 
    on Aug 2, 2018 3:41 PM over 2 years ago
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

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    EZ Admin