Programmable current control oscillator

The invention relates to a programmable current control oscillator. The oscillator comprises an external reference circuit (10), a sectional current rudder (20) and an oscillation circuit (30), wherein the external reference circuit (10) is electrically connected to the sectional current rudder (20) and the oscillation circuit (30) respectively, and the sectional current rudder (20) is electrically connected to the oscillation circuit (30). According to the technical scheme, the sectional current rudder is arranged and can be used for adjusting a reference current with a fixed amplitude provided by the external reference circuit, so that the amplitude of the current entering the oscillation circuit can be changed, and the frequency of a clock signal output by the oscillator can be changed.Therefore, by utilizing the programmable current control oscillator provided by the embodiment of the invention, the clock frequency can be adjusted, and the precision of the clock frequency can be increased. 本发明涉及种可编程的电流控制振