For circuit and the method for high-speed, low-power level conversion

For circuit and the method for high-speed, low-power level conversion

  • CN 101,523,725 B
  • Filed: 12/19/2006
  • Issued: 05/18/2016
  • Est. Priority Date: 09/18/2006
  • Status: Active Grant
First Claim
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1. a level shifting circuit, corresponding for generation of its logic level and input signalLogic level is compared the output signal with not identical magnitude of voltage, and input signal has the first electricityThe second logic level under the first logic level and second voltage value under pressure value, output signalThere is the second logic level under the first logic level and the 4th magnitude of voltage under tertiary voltage value;

  • Described level shifting circuit comprises;

    Switch current generator, it is received in the first logic level and under the first magnitude of voltageThe input signal switching between the second logic level under two magnitudes of voltage and generation are switchedElectric current, switch current generator comprises the first electric current arteries and veins for generation of the first switch current pulseRush generator and the second current pulser for generation of the second switch current pulse, theOne switching current impulse is contrary with the second switch current pulse polarity;

    Regulate the first current impulse to send outRaw device and the second current pulser are selected the level shifting circuit of being determined by switch currentSwitch speed,Differential current sensor, it receives the first switch current pulse and the second switch current arteries and veinsPunching and be created in the first logic level under tertiary voltage value and the 4th magnitude of voltage under secondThe output signal of switching between logic level, wherein the first magnitude of voltage, second voltage value,Tertiary voltage value and the 4th magnitude of voltage are different, andKeep current feedback circuit, for generation of the maintenance electric current of desired value to keep output signalLogic level consistent with the logic level of input signal, andMaintenance current feedback circuit is independent of the first current pulser and the second current impulse is sent outThe switch current pulse that raw device produces produces maintenance electric current, and maintenance electric current is offered to theOne current pulser and the second current pulser.

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