DIGITAL-ANALOG CONVERTER USING TIME-INTERPOLATION SCHEME

摘要

The present invention relates to a technology which improves resolution by controlling the transient time to an analog level using a time-interpolation method in a digital-analog converter and suppresses the consequent increase in the area. The present invention includes a m-bit time-interpolation unit for receiving analog signals VREF(k) and VREF(k+1) supplied through (n-m)-bit reference voltage resistor column and (n-m)-bit first and second decoders, performing time-interpolation which controls the transient time from one analog level to other analog level, and outputting an analog signal (VC) having its resolution increased by m-bit. [Reference numerals] (120A) (n-m) bit decoder; (130) m-bit time-interpolation unit