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TMP422-Q1: how to select slave address with two TMP422-Q1?

Eddie Chou
Expert 6200 points
Part Number: TMP422-Q1
Other Parts Discussed in Thread: TMP422, DXP, , TMP421-Q1

Hi Team,

My customer is planning use two TMP422 but just use one transistor, from datasheet page 17, the unuse channel DXP must be connect to GND and DXN must be left unconnected. 

Customer would like to confirm what is the slave address with different DX1/DX2 connection ( to ground and floating)?

Thanks & Regards

Eddie

  • 0
    TI__Expert 7950 points

    Hi Eddie,

    I tested your customer's setup and got the addresses shown below (0x4E and 0x4D) for each TMP422-Q1.

    Also, if your customer is only planning on using one channel, our TMP421-Q1 may be a good solution as it has one channel and two dedicated address pins.

    Best regards,

    Jesse