1 Reply Latest reply on May 12, 2016 11:41 AM by JacobT_81

    why wiced sense need a I2c expander

    raseyns

      In wiced sense shematics I saw that wiced sense using LTC4313

       

      Why do we need a I2C expander?

        • 1. Re: why wiced sense need a I2c expander
          JacobT_81

          I2C busses are limited by their picofarad load. They generally max out at about 400pf. And each sensor generally carries a load in the range of 100pf. 

           

          This expander allows for a larger picofarad load on the bus.

           

          Sometimes these expanders are also used as voltage level shifters on the bus.

           

          Jacob

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