CURRENT WEIGHTED VOLTAGE INTERPOLATION BUFFER

A voltage interpolation buffer for interpolating voltages by adjusting ratio of bias currents includes a first difference voltage to current unit for outputting corresponding difference current according to a first voltage, a first bias current and voltage of a voltage output end, a second difference voltage to current unit for outputting corresponding difference current according to a second voltage, a second bias current and the voltage of the voltage output end, and a current to voltage unit coupled to the first difference voltage to current unit, the second difference voltage to current unit and the voltage output end for outputting a interpolation result of the first voltage and the second voltage corresponding to a ratio of the first bias current and the second bias current according to the difference currents outputted by the first difference voltage to current unit and the second difference voltage to current unit.