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ADS1115 internal MUX control

JerryL
Prodigy 210 points
Other Parts Discussed in Thread: ADS1115

Hello,

find the following internal block in the datasheet of ADS1115, but cannot find the related register to switch it. can you help please? for example, want to internally connect AIN1 to GND.

Best regards,

JH

  • 0
    TI__Intellectual 1610 points

    Hello JH,

    Thank you for your query. Please refer to the CONFIG REGISTER subsection in the REGISTERS section in the datasheet.

    Bits [14:12] of the Config Register configures the input multiplexer.

    The possible combinations are:

    000 : AINP = AIN0 and AINN = AIN1 (default)

    001 : AINP = AIN0 and AINN = AIN3

    010 : AINP = AIN1 and AINN = AIN3

    011 : AINP = AIN2 and AINN = AIN3

    100 : AINP = AIN0 and AINN = GND

    101 : AINP = AIN1 and AINN = GND

    110 : AINP = AIN2 and AINN = GND

    111 : AINP = AIN3 and AINN = GND

    Please refer to the ADS1115 datasheet for more details.

    Regards,

    Krunal