Oscillator and design method thereof

Abstract

The invention discloses an oscillator and a design method thereof, comprising an offset module, a delaying module, a conversion module, a damping module and an output module; wherein, the offset module is used for generating an offset current according to an input signal; the delaying module is used for receiving the offset current which is generated by the offset module and generates the oscillation signals with scheduled periods according to the offset signal; the delaying module comprises a current source submodule, a variable resistance submodule and an inverter submodule; the maximum up-pulling current and the maximum down-pulling current of the delaying module are controlled by the power source submodule, thus controlling the power loss current of the delaying module; the delaying time of the delaying module is controlled by the variable resistance submodule; the gate capacitance of the delaying module is adjusted by the inverter submodule, thus controlling the power loss of the delaying module. The conversion module reduces the power loss of the oscillator by further reducing the DC current. The invention provides the oscillator which has simple structure, high efficiency, side application range and ultra-low power loss, and is especially suitable for low frequency application.

Description

technical field [0001] The invention mainly relates to the field of integrated circuit design, in particular to an oscillator and a design method thereof. Background technique [0002] As the basic circuit of the electronic system, the oscillator is used to generate various clock signals required by the system. The power consumption of the oscillator is relatively small for the dynamic power consumption during normal operation of the system. But when the system is in the standby state, the power consumption of the system is very small. If the oscillator is still working, its power consumption is very important as a component of the standby power consumption. Especially for battery-powered mobile systems, since standby power consumption is considered a key indicator of mobile system operation, oscillator power consumption, which is an important part of standby power consumption, is extremely important. [0003] Dynamic Random Access Memory (DRAM, Dynamic Random Access Memor...

AI Technical Summary

Problems solved by technology

In addition, the buffer circuit 101 and the output circuit 102 in FIG. 1 also consume part of the current, which is also critical for the design of ultra-low power consumption

In summary, inverter-based ring oscillators consume a lot of power

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