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TMP423: Schematics check

Part Number: TMP423


PLease help to check if the tmp423 schematics as below is ok or not and provide your comments.  THanks!


  • Dear Anthony -
    the topology looks to follow the datasheet recommendations - but you may want to double check the values of R702, R710 and R713 (to me it looks like you might have 1 or 10 Ohms there, not clear in the drawing) as well as the values for C224, C228 and C497 which can be from where you have them to 1 to 1.5nF (0.001uF or 0.0015uF) before you see error curve start to drop (Figure 6, page 8). (or . Additionally, adding pullup resistors on your I2C lines is a good thing to do as well.

    See Figure 13 here (page 10) and the notes 2 and 3 on the resistors and caps around your PNP transistors.