Patent ID: 9413381
Filing Date: 2016-08-09
CPC Classification: H03M

Claim Text:
1. A low-power reconfigurable voltage-mode digital-to-analog converter (DAC) driver circuit, the circuit comprising: a first and a second supply voltage; and a plurality of DAC units, each DAC unit of the plurality of DAC units directly coupled to a respective bit of a digital input, wherein: the plurality of DAC units are configured to maintain a constant value for an output impedance of the DAC driver circuit, each DAC unit of the plurality of DAC units comprises a plurality of parallel coupled DAC slices, each DAC slice of the plurality of parallel coupled DAC slices comprises a complementary switch pair of one or more complementary switch pairs and a respective impedance of one or more respective impedances, the one or more complementary switch pairs are configured to couple first nodes of the plurality of parallel coupled DAC slices to one of the first or the second supply voltage, based on the respective bit of the digital input, and second nodes of the plurality of parallel coupled DAC slices are coupled to an output node.