A Multi-bias Voltage Controlled Oscillator with Radiation Resistance

Abstract

A multi-bias voltage-controlled oscillator with anti-radiation function of the present invention includes a plurality of bias circuits and a plurality of delay units, each bias circuit is correspondingly connected to a delay unit, and each delay unit is connected in a ring shape To form a ring oscillator, each bias circuit receives an input control voltage, generates a bias voltage and provides it to a corresponding delay unit. The invention has the advantages of simple structure, low cost, anti-radiation function and low soft error rate.

Description

technical field [0001] The invention relates to the technical field of voltage-controlled oscillators, in particular to a multi-bias voltage-controlled oscillator with anti-radiation function. Background technique [0002] In order to meet the demand for higher integration, more functions, and lower power consumption of integrated circuits, the feature size and operating voltage of integrated circuits continue to shrink, resulting in a dramatic increase in the radiation sensitivity of the circuits. As an important part of the integrated circuit, the voltage controlled oscillator VCO usually does not have the anti-radiation function in the prior art. Once the output of the frequency divider is affected by the single event effect due to the influence of radiation, it will occur. errors, can seriously affect the performance of the circuit. Therefore, there is an urgent need to provide a voltage-controlled oscillator with an anti-irradiation function, so as to improve the anti-...

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Problems solved by technology

Voltage-controlled oscillator VCO is an important part of integrated circuits. In the prior art, voltage-controlled oscillators usually do not have the anti-irradiation function. Once the radiation is affected, the output of the frequency divider will be affected by the single-event effect. error, can seriously affect the performance of the circuit

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