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.

XTR300 unbalanced supply voltage

Other Parts Discussed in Thread: XTR300

Hello,

Want to use XTR300 for generate DC voltage between 0 - 37 Vdc for test product

Plan to set V- = -3V and V+ = 40Vdc

Data sheet are not clear about unbalanced supply voltage. Tina spice model (from TI) show a maximum voltage at 15.85V

Possible to use XTR300 as 0-37Vdc voltage source?

Thanks

  • Hello David,

    The XTR300 datasheet describes asymmetrical power supply configurations on page 18 of the product datasheet.  I've copied the relevant text to the bottom of this message.  

    That said, I have some concerns with this application.  The maximum recommended power supply voltage is +/-20V or 0-40V.  The absolute maximum power supply voltage difference between V+ and V- is +44V.  With supply voltages of +40V and -3V, the customer will be operating the product with a constant +43V differential between the supply terminals.  While this voltage is within the absolute maximum specifications (and therefore will not result in damage) it is outside of the recommended operating conditions and the device may perform outside of the stated datasheet specifications.

    Is there a particular reason that the customer has selected the XTR300 for this application (e.g. error flags, output monitors, etc.)?  If not, have they considered a simple high-voltage op amp such as some of the 60V products listed in the search results below?:

    http://www.ti.com/lsds/ti/amplifiers-linear/operational-amplifier-op-amp-products.page#p1261max=60;100&p480=1;1