AND Gates are used in creating logic gates. The AND Gate activates its digital output when all of the inputs attached to it are active. The amount of inputs that the AND gate has can be tweaked, and the amount of inputs can be between two to a hundred.
In default mode (Output Value set to "Minimum Input"), the AND gate will always output the lowest analog value inputted (negative values are lower than positive values).
In LittleBigPlanet PS Vita and recent versions of LittleBigPlanet 2, there is a tweak option called Output Value. By default this is set to "Minimum Input", which makes the AND Gate function as above. Users can switch this setting to "Multiply Inputs" to make the AND Gate output the multiplied sum of the inputs.