Patent ID: 6998782

Claim:
A circuit for generating a substantially process-independent current, comprising: a first resistor circuit that is arranged to provide a first current based, in part, on a first voltage; a second resistor circuit that is arranged to provide a second current based, in part, on a second voltage, wherein the second resistor circuit is substantially matched with the first resistor circuit; a current arithmetic circuit that is arranged to provide the substantially process-independent current at a current node such that the substantially process-independent current is substantially given by: A*I 1 *(Iext/I 2 ), wherein A corresponds to a substantially constant predetermined factor, I 1 corresponds to the first current, I 2 corresponds to the second current, and Iext corresponds to an external current wherein an output of the current arithmetic circuit is coupled to the current node, and the current arithmetic circuit is arranged to receive the external current.