Patent ID: 8749418

Claim:
An interpolative digital-to-analog converter adapted to convert a digital signal that includes first to N th bits into an analog signal, where N is a positive integer greater than 1, said interpolative digital-to-analog converter comprising: a first router unit that is adapted to receive the first and second bits of the digital signal, and first and second voltages, and that is operable based on the first and second bits of the digital signal to output one of the first and second voltages to be a first router voltage and to output one of the first and second voltages to be a second router voltage; and an interpolation unit that receives the first bit of the digital signal, that is coupled to said first router unit for receiving the first and second router voltages, and that is operable to perform interpolation operation on the first and second router voltages according to the first bit of the digital signal, so as to generate the analog signal having a voltage magnitude ranging from the first router voltage to the second router voltage.