Post Go back to editing

ADN8834 TMPGD function

Hi 

I have some questions about ADN8834 TMPGD:

1.What 's the default voltage logic of TMPGD, is low correct ?

2.From ADN8834 DS(REV.B page 5) TEMPERATURE GOOD High Threshold 1.54V, does it means  if TMPGD reaches (UP)1.54V then it's logic will become high ? what will logic happen if TMPGD voltage more than 1.56V ?

3.From ADN8834 DS(REV.B page 5) TEMPERATURE GOOD Low Threshold 1.46V, does it means  if TMPGD reaches (down)1.46V then it's logic will become high ? what will logic happen if TMPGD voltage lower than 1.40V ?

  • Hi,

    Thank you for reaching us. 

    For your questions,

    1. The TMPGD by default is low. It only gets HIGH when IN2N goes equal to IN2P.

    2. It is the VOUT1 (connected to IN2N) condition that is being talked here. Let us say that IN2P is at fixed 1.5V. The datasheet is only saying that 1.4V to 1.46V is the threshold for the TMPGD will go HIGH. VOUT1 voltage lower than 1.4V will put TMPGD to LOW.

    3. If the VOUT1 goes higher than the range of 1.54V to 1.56V, then TMPGD will be low also.

    TMPGD will only go to HIGH when IN2N is equal to IN2P (consider the threshold). Taking the minimum and maximum threshold, the TMPGD can go HIGH when VOUT1 is within 1.4V to 1.56V (typically 1.46V to 1.54V). 




    Regards,

    Noel