• State
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 370 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

Low Impedance Amplifier for B-dot Probe construction

theodore kioussis
Prodigy 10 points

To whom this may concern;

I am writing to inquire what type of TI amplifier (including part number) I should purchase for the construction of a B-dot probe. The literature article I am reading calls for "A high-frequency custom built differential amplifier".

My professor further instructed me to obtain an amplifier of low impedance, as the output impedance of our signal generator that runs a current through Helmholtz coils to generate our calibration fields is 50 Ohms.

Any suggestions are greatly appreciated.

  • 0
    TI__Genius 16735 points
    Hi,

    I don't know too much about B-dot probes so can you clarify what bandwidth and frequency of operation you are looking for?
    The following is TI's parametric search that includes all our high speed, fully differential amplfiers. There are only 34 parts listed but as soon as you can narrow down your bandwidth, power and timing requirements you can pick one of these amplifiers.

    www.ti.com/.../products.html

    As for your low impedance, what you need to do is pick proper input and feedback resistors to give you the input 50 Ohm resistance.

    Thanks!
    -Karan