Patent ID: 7746590

Claim:
Circuitry comprising a current mirror controller for controlling current mirrors, the current mirror controller comprising: a control node having a reference current therethrough; a current mirror master connected to the control node and receiving the reference current, the current mirror master connected to the current mirrors; a first switching device connected to a power supply controlling a state of the current mirror master; a circuit module configured to control a voltage at the control node to a first voltage during a first operational mode; and the circuit module configured to control the voltage at the control node to a second voltage during a second operational mode, wherein: the first switching device controls the current mirror master to an on state during the second operational mode during which the current mirrors mirror the reference current; a current produced by a one of the current mirrors is responsive to an area feature of the one of the current mirrors relative to the area feature of the current mirror master; and the first operational mode comprises an off state for the current mirrors and the second operational mode comprises a current-supplying state for the current mirrors.