• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 49 subscribers
  • Views 227 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.

What is the best way to change the gain of the amplifier?

Robert Unguran
Intellectual 350 points
Other Parts Discussed in Thread: TMS320F2811, OPA365

I have 2 signals between  -1,1 and -30,30. The frequency of the signal is 2 and 5 Mhz. I would like to use OPA365 combined with tms320f2811. What is the best way to change the gain of the amplifier? 

  • 0
    TI__Genius 13935 points

    Hi Robert,

    The TMS320 has multiple ADC inputs, so you can set up a channel for each input signal.  The OPA365 has an absolute maximum supply voltage of 5.5V, so a passive attenuator will be required for the -30V to 30V signal.  If  you set up the attenuator to attenuate the +-30V signal to +-1V you can use the same gain for both signals.

    Loren