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ISO7741: output characteristics needed e.g. figure 12 in SLLA284A

David Kramer35
Prodigy 10 points
Part Number: ISO7741

Hi,

is it possible to get the graph for the output characteristic for the ISO7741 (as in SLLA284A, figure 12)?
Since I carry the output signals over an FFC line and suspect a line impedance mismatch due to EFT problems, I desperately need the output impedance Z0. The ISO7741 datasheet only shows a series resistance of approx. 20 ohms. Unfortunately, the total impedance of the output with the push-pull driver is not visible in the data sheet.

  • 0
    TI__Mastermind 49445 points
    Hi David,

    Thank you for using E2E forum and for showing interest in ISO7741. Though the output impedance characteristics plot given in figure 12 of SLLA284A document is derived from ISO7240, it equally applies to ISO7741 as well. You can use the plot in figure 12 for your calculation related to ISO7741 impedance matching.
    Please note that the impedance plot given in the figure is the worst case impedance plot.

    Let me know if you have any other questions, thanks.


    Regards,
    Koteshwar Rao