• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 47 subscribers
  • Views 955 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.

INA226: INA226 vs INA240

Khoi Nguyen83
Expert 1180 points
Part Number: INA226
Other Parts Discussed in Thread: INA240

I need something similar INA226, which I used in the past but with analog output instead of I2C for current sense on high side of 48V input.

I found INA240, which I think should work.

I also need a differential analog output from the current sense, with output rating 0 to 5V,  so is there device that has that builtin?

if not, I  need to convert with op amp externally.

Thanks,

Khoi

  • 0
    TI__Mastermind 26335 points

    Hello Khoi,

    Thanks for considering to use Texas Instruments.  If you are looking to have the current shunt monitor produce a differential signal with respect to a reference voltage you can use the configuration shown in the figure below.  With a 5V supply the output will at worst be able to swing from 10mV to 4.8V.  

    If you are looking for a analog output device that provides a current measurement, vbus measurement, and power  measurement through an analog output, we do not have one.  All of our power monitoring devices utilize an I2C interface for the output.

  • 0 in reply to Patrick Simmons
    Expert 1180 points

    I am aware that analog output is only used for shunt current meamsurement.

    I am measuring max. 20A load at 48V.

    Thanks for the diagram.

  • 0 in reply to Khoi Nguyen83
    TI__Mastermind 26335 points
    Hello Khoi,

    I had to make sure that was the case as another customer just recently requested for a power measurement device with an analog output.

    Based off the details I have, the INA240 does appear to be the best analog output replacement for the INA226. Let me know if you have any further questions.