LSF0102: VOL Test with 47k-ohm, 4.7k-ohm, 0.3k-ohm

Ting Ye

Part Number: LSF0102

Hello Team,

Below is LSF0102 VOL Test with 47k-ohm, 4.7k-ohm, 0.3k-ohm. We can see with lower value Rpu (larger sinking current required), the VOL increases. May I know if the test results are correct?LSF010x Waveform With Different Pull Up Resistors_cus.pdf

Regards,

Ting

over 7 years ago

0 ShreyasRao over 7 years ago

TI__Guru 62080 points

Hi Ting Ye,

I agree. You have a good presentation explaining the cause and affect of using lower pullup resistors causing higher vol.
At the end, referring to the app note, you can have
The Factors affecting the Vol for LSF devices here which explains the basics behind it :
www.ti.com/.../scea056.pdf

0 Ting Ye over 7 years ago in reply to ShreyasRao

TI__Genius 11800 points

Hello Shreyas,

Thank you for helping! I updated the application note which explains why the external resistors make voltage level difference. Thank you.

LSF010x Waveform With Different Pull Up Resistors_cus2.pdf

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LSF0102: VOL Test with 47k-ohm, 4.7k-ohm, 0.3k-ohm