Patent ID: 8174320

Claim:
A current switching system, comprising: first and second mirrored devices coupled to each other and a coupled terminal, and the first and second mirrored devices are coupled to an input terminal and an output terminal; a first storage element in element in parallel with the first mirrored device and the first degeneration device; a diode connected switching device coupled to the coupled terminal; a first impedance device coupled between the diode connected switching device and a low voltage supply; a first switching device in parallel with the first impedance and having a control terminal; a delay circuit having an input and an output, wherein the output is coupled to the control terminal; an inverter coupled between the input terminal and the input of the delay circuit; wherein the inverter and the delay circuit dynamically change a current at the coupled terminal to a second level depending when a threshold is met, and an impedance on the coupled terminal remains low both before switching and during switching.