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LMH1219: Unused pins suggestion

Antony Lin
Genius 13480 points
Part Number: LMH1219

Hi,

We have some related questions.  If we only use one channel for IN0 ,what is our suggestion regarding IN1+ ,IN1-,OUT1+,OUT1- pin connections?

Besides, how to connect LOCK_N if it's not used?

Thanks!

Antony

  • 0
    TI__Mastermind 29635 points

    Hi Antony,

    These unused pins can be left unconnected or terminated with 50-ohms to GND on each unused pin. When the LMH1219 is configured so that the signal goes from IN0 to OUT0 only, the unused input and output are powered down by the device.

    Even if LOCK_N is not used, I recommend using a 2k to 5k pull-up to VDDIO, since LOCK_N is an open-drain output.

    Regards,

    Michael