A circuit dynamically biases switching elements in a current-steering digital-to-analog
converter (DAC), The DAC includes, in each cell, a current source coupled to a
current node, 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. The circuit includes first and second inputs
coupled to the first and second DAC output nodes, respectively, first and second
outputs coupled to the first and second switching elements, respectively, and a
third output coupled to the first and second switching elements. The first and
second outputs provide a first ON bias voltage and a second ON bias voltage to
control the first and second switching elements, respectively, such that a voltage
at the current node is maintained at a predetermined voltage. The third output
provides a common OFF bias voltage.