Patent ID: 6204654
Filing Date: 2001-03-20
Classification: G05F

Abstract:
A dynamically boosted current source circuit, comprising:an input node,a threshold detector arranged to detect when an input signal connected to said input node crosses a first predetermined threshold,a capacitive node connected such that the speed with which said capacitive node changes state affects the response speed of an associated circuit that is responsive to a transition of said input signal,a boosted node connected such that the current received at said boosted node affects the speed with which said capacitive node changes state, anda current source arranged to provide a first current to said boosted node when said input signal is idle and a boosted current greater than said first current to said boosted node when said threshold detector detects that said input signal has crossed said first predetermined threshold, said current source arranged such that the rate at which its output current is slewed from said first current to said boosted current and the amplitude of said boosted current are independent of the slew rate and amplitude of said input signal, said boosted current increasing the speed with which said capacitive node changes state and there by the speed with which said associated circuit responds to a transition of said input signal.