• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 48 subscribers
  • Views 780 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.

XTR300 sinking current source

Hawk Tong
Intellectual 1840 points
Other Parts Discussed in Thread: XTR300, TIPD155, DAC8562, XTR110

Dear Sir,

it is said XTR300 can work as +/-20mA current source, i can't find reference schematic for sinking current source from data sheet. Can you pls supply one for me?

thanks in advance.

 

regards

Hawk Tong

  • 0
    TI__Guru 62885 points

    Hello Hawk,

    Please take a look at TIPD155:

    It is a reference design that showcases the DAC8562 and two XTR300s for a dual-channel analog output module that can source and sink voltage and current.

    Please let us know if you have any questions about this design.

  • 0 in reply to Collin Wells
    TI__Intellectual 1840 points
    Collin,

    many thanks, I note it.
    since my customer prefer more output current, up to +/-60mA. what do you think to use two or more paralleling XTR300 to achieve more output capability ?

    regards
    Hawk Tong
  • 0 in reply to Hawk Tong
    TI__Guru 62885 points

    Hi Hawk,

    The minimum short circuit current of the XTR300 device is 24.5mA, therefore to ensure +/-60mA three XTR300 devices would be required.

    That said, we've never tried to parallel multiple XTR300 devices but have some concerns on how robust of a design it will be because these devices weren't designed for this type of operation.

    Another solution would be to use a circuit similar to the one shown in the XTR110 datasheet which I've copied below:

  • 0 in reply to Collin Wells
    TI__Guru 62885 points
    Hi Hawk,

    I forgot to ask in the previous message, what is the end application that requires the +/-60mA output?