Patent ID: 6967609

Claim:
A circuit for dynamically biasing switching elements in a current-steering digital-to-analog converter (DAC), the DAC including a plurality of cells, each cell having a current source and a differential switch coupled to the current source via a current node, the differential switch including a first switching element coupled between the current node and a first DAC output node, and a second switching element coupled between the current node and a second DAC output node, said circuit comprising: a first input coupled to the first DAC output node; a second input coupled to the second DAC output node; a first output coupled to the first switching element, said first output providing a first ON bias voltage for the first switching element, the first ON bias voltage controlling the first switching element such that a voltage at the current node is maintained at a predetermined voltage; a second output coupled to the second switching element, said second output providing a second ON bias voltage for the second switching element, the second ON bias voltage controlling the second switching element such that a voltage at the current node is maintained at a predetermined voltage; and a third output coupled to the first and second switching elements, said third output providing an OFF bias voltage for the first and second switching elements.