Patent ID: 7355543

Claim:
A digital-to-analog converter comprising: a data input unit including data switches that are opened and closed in response to a logic level of input digital data; a first conversion unit including a first charging capacitor charged with a voltage transferred through the data switches in response to a first charging control signal, and a first distribution capacitor charged with a voltage corresponding to the digital data through a charge distribution between the first charging capacitor and the first distribution capacitor in response to a first distribution control signal; a second conversion unit including a second charging capacitor charged with a voltage transferred through the data switches in response to a second charging control signal, and a second distribution capacitor charged with the voltage corresponding to the digital data through a charge distribution between the second charging capacitor and the second distribution capacitor in response to a second distribution control signal; and a signal output unit selectively connected to the first conversion unit or the second conversion unit in response to a select control signal, and outputting an analog data signal corresponding to the voltage across the first distribution capacitor or the voltage across the second distribution capacitor.