Patent ID: 7023367

Claim:
A current source cell, comprising: a current source providing a first current at a first node, wherein variations of a first voltage at the first node results in variations of the first current; a first switch coupled between the first node and a first output terminal and having a control terminal; a second switch coupled between the first node and a second output terminal and having a control terminal; a control signal coupled to selectively apply a first drive voltage to the control terminal of a selected one of the first and second switches to cause the selected switch to close, thereby steering the first current to the corresponding one of the first and second output terminals; and a voltage adjustment circuit coupled to detect variations in the first voltage at the first node and vary the first drive voltage in response to the variations in the first voltage, wherein the first drive voltage applied to the selected switch is varied to reduce the variations in the first voltage, thereby maintaining the first voltage at a substantially stable voltage value.