Voltage-controlled oscillator time delay unit used for phase-locked loops and based on single even transient radiation-hardened effects

Abstract

The invention discloses a voltage-controlled oscillator time delay unit used for phase-locked loops and based on single even transient radiation-hardened effects in order to solve the technical problem that a conventional radiation-hardened voltage-controlled oscillator for mixed signal phase-locked loops has high power consumption. The voltage-controlled oscillator time delay unit comprises a voltage-controlled oscillator differential time delay unit composed of MOS transistors M0-M4, and a detection circuit composed of MOS transistors M5-M8, and voltage sources V1 and V2. The grid electrodes and the drain electrodes of the MOS transistors M5 and M6 are respectively connected before being connected to the positive output end Voutp of the differential time delay unit. The grid electrodes and the drain electrodes of the MOS transistors M7 and M8 are respectively connected before being connected to the negative output end Voutn of the differential time delay unit. The source electrodes of the MOS transistors M5 and M7 are connected to the voltage source V1. The source electrodes of the MOS transistors M6 and M8 are connected to the voltage source V2. As the detection circuit does not work when the time delay unit normally works, the power consumption is thus reduced.

Description

technical field [0001] The invention relates to a voltage-controlled oscillator delay unit for a phase-locked loop, in particular to a voltage-controlled oscillator delay unit for a phase-locked loop which should be based on the anti-single-event transient radiation effect. Background technique [0002] refer to figure 1 . The document "LovelessTD, MassengillLW, BhuvaBL, et al. Aprobabilistic analysis technique applied to radiation-hardened-by-designvoltage-controlled oscillator formixed-signalphase-lockedloops.NuclearScience, IEEETransactionson, 2008, 55(6):3447-3455" discloses a phase-locked loop for mixed signals Radiation Hardened Voltage Controlled Oscillator. The circuit mainly uses the idea of ​​triple-mode redundancy to realize the anti-radiation performance of the voltage-controlled oscillator. The circuit is composed of three sets of parallel delay unit chains, an additional delay unit and a decision circuit. The output signal of the judgment circuit is fed bac...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the large power consumption of the existing radiation-resistant voltage-controlled oscillators used in mixed-signal phase-locked loops, the present invention provides a voltage-controlled oscillator delay unit for phase-locked loops based on anti-single event transient radiation effects

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