• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 710 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.

INA240: Current sense amplifier selection

Carlos Silva85
Expert 4915 points

Part Number: INA240

I need help selecting a current sense amplifier with the requirements below:

  • 50Mhz open loop gain.
  • Gain = 20 (gain error = 0.19%)
  • Amplifier input offset voltage +/- +0.2mV
  • Temperature drift +/- 2.5uV/K

Small footprint is important, high side current solution can be considered (36V Bus) as well as options with integrated sense resistor.

Happy to discuss further for product roadmap & business case.

 

  • 0
    TI__Mastermind 26335 points
    Hey Carlos,

    Thanks for reaching out on the forum. So the INA240 does meet some of those specs. However, all of our current shunt monitor devices are unavoidably closed loop. Is there a particular reason you need the open loop gain bandwidth specification? If your customer absolutely needs to exploit the open loop gain of the amplifier, you might need to direct your question to the op-amp group. However, I suspect their solution will not be as integrated and will cost a lot more board space. If you are wanting to get a better gauge on our future devices, perhaps we can take this offline?
  • 0 in reply to Patrick Simmons
    TI__Mastermind 26335 points

    Hey Carlos,
    As we have taken this offline and are continuing correspondence through email, I am going to close this thread.