Suppose a 18-bit digital representation of an analog signal with amplitude of 10 v (i. e., signal can vary from +10v to –10 v) is to be used. n =18 bits would allow for a huge dynamic range of amplitudes, from the smallest binary number (2^0 = ) to the largest binary number of (2^n–1 = ), for a dynamic range of db. this corresponds to an amplitude resolution (step-size) of (20 v)/(2n-1) = v.