Patent ID: 7295142
Filing Date: 2007-11-13
Classification: H03M

Abstract:
1. A digital-to-analog converter for converting a digital signal including a plurality of bits into a corresponding analog voltage, comprising: a first divider for dividing a voltage between a lower reference voltage and an upper reference voltage into a plurality of stepwise voltages; a first selector for selecting, according to at least one most significant bit in the digital signal, a pair of lower limit voltage and upper limit voltage adjacent to each other among the plurality of stepwise voltages; a second divider having a resistor for dividing the voltage between the lower limit voltage and the upper limit voltage into a plurality of divided voltages; a second selector for selecting, according to at least one least significant bit in the digital signal, a voltage associated with the at least one least significant bit among the plurality of divided voltages as an output voltage; and a switch provided in parallel with the resistor in said second divider for short-circuiting opposite ends of the resistor for a predetermined period of time.