Patent ID: 8269659
Filing Date: 2012-09-18
Classification: H03M

Abstract:
1. A digital-to-analog (DAC) circuit, the DAC circuit comprising: an upper voltage supply; a middle voltage supply; and a ground node configured to couple to a ground; an upper DAC stage comprising an upper DAC switch circuit, the upper DAC switch circuit consisting of a first set of transistors, wherein a body of the first set of transistors is coupled to the upper voltage supply and a drain and source of the first set of transistors is configured to receive a voltage in a range between the middle voltage supply and the upper voltage supply; and a lower DAC stage comprising a lower DAC switch circuit, the lower DAC switch circuit consisting of a second set of transistors, wherein a body of the second set of transistors is coupled to the ground node and a drain and source of the second set of transistors is configured to receive a second voltage in a range between the ground node and the middle voltage supply.