• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 49 subscribers
  • Views 748 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Unity gain buffer

David Graham
Prodigy 250 points
Other Parts Discussed in Thread: BUF602

I am looking for a unity gain buffer that can accurately track 0V-5V rise/fall times of ~3ns and would appreciate any recommendations.

Thank you,

David Graham

d-graham1@ti.com

  • 0
    TI__Genius 13935 points

    Hello David,

    Do you have a sigle ended signal?  What kind of load are you driving?  

    5V in 3ns is around 1,600 V/us slew rate and you would need a part with an 8V or higher supply.  The BUF602 looks like it would meet your requirements.

     

    I would recommend a supply configuration of -2V and +8V. 

    Do you need a fixed gain part?  Several of our current feedback amplifiers could also be set up for a gain of 1. 

    Regards,

    Loren

  • 0 in reply to Loren Siebert 1
    TI__Prodigy 250 points
    Loren,

    First, many thanks for your response.

    Here is some additional information in response to your comments/questions:
    1. Signal is single ended.
    2. The load will ATE interface to tester resource comprising of a transmission line, a few relays, pogo interface, and tester resource is ‘AC terminated, 50ohms to Vterm’.
    3. I would prefer a gain of 1 since device output is up to 5V and tester resource is limited to max of +7V.

    Yes the BUF602 looks like a good solution, one potential concern was the low input impedance of 2kohm or perhaps this is not a concern if AC coupled? The outputs of my device under test are spec'd with output load of only +/-1mA.

    I appreciate your thoughts based on this additional feedback.

    Again, thank you for your inputs.
    David Graham