• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 69 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.

LP8725: I2C Interface

Adrian Williams
Prodigy 20 points
Part Number: LP8725

Tool/software:

Hi,

I had some questions about the I2C interface for the LP8725.

From a different thread, I understand that the maximum speed of the interface is 400kHz (here is the thread). Given this:

  • What is the maximum pin capacitance of the SCLK and SDATA pins?
  • Does the interface have glitch filtering? If so, what pulses can it handle?
  • What is the output low sink current for the interface?

Hope to hear from you soon.

Best Regards,

Adrian

  • 0
    TI__Genius 10407 points

    Hi Adrian, 

    Thank you for reaching out on E2E. 

    • The pin capacitance of SCL and SDA pins are not characterized and not specified in the datasheet.
      It is recommended to estimate this with a value of 10 pF maximum

    • As in compliance with the standard I2C specs, there is a 50 ns max deglitch filter for fast mode. 

    • Output low level sink current is given as 2mA:

    Hope this helps to answer your questions.

    Best Regards, 
    Sarah 

  • 0 in reply to Sarah Lao
    Prodigy 20 points

    Hi Sarah,

    Thank you, this was helpful.

    Could I also ask if there are any IBIS models available for the LP8725?

    Best Regards,

    Adrian

  • 0 in reply to Adrian Williams
    TI__Genius 10407 points

    Hi Adrian, 

    Unfortunately we do not have any IBIS model for the LP8725. This is an older device with limited resource support. 

    Apologies for the inconvenience. 

    Best Regards, 
    Sarah