Level conversion circuit and electronic equipment

Abstract

A level switching circuit and an electronic device comprising the circuit. The level switching circuit comprises: a first inverter (INV0), a coupling capacitor (C0), a second inverter (INV1), a biasing resistor (R0), and a low-frequency reconstruction circuit (51); an input end of the first inverter is used for inputting a first signal (IN) of a first level domain (VDDL), and an output end of the first inverter is connected to one end of the coupling capacitor; an input end of the second inverter is connected to the other end of the coupling capacitor, and an output end of the second inverter is used for outputting a second signal (OUT) of a second level domain (VDDH); a first end of the biasing resistor is connected to the input end of the second inverter, and a second end of the biasing resistor is connected to the low-frequency reconstruction circuit; the low-frequency reconstruction circuit is further connected to the output end of the first inverter or the output end of the second inverter and is used for supplying a bias voltage to the biasing resistor. The level switching circuit is capable of reducing low-frequency loss during a level switching process.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a level conversion circuit and electronic equipment using the level conversion circuit. Background technique [0002] At present, the application of high-speed serial interfaces in the industrial and consumer fields is becoming more and more extensive, and the speed of high-speed logic circuits in chip design is also getting faster and faster. The digital code stream in the chip is usually low voltage, but the chip interface potential is usually high voltage, so a level conversion circuit is needed to perform level conversion of the digital code stream. As the frequency of digital circuits increases, so does the speed requirement for such level shifting circuits. At the same time, since the voltage of the chip interface generally remains unchanged and the internal digital voltage is getting lower and lower, the design difficulty of this level conversion circuit is also getti...

AI Technical Summary

Problems solved by technology

[0008] An embodiment of the present invention provides a level shifting circuit to solve the problems of slow level shifting speed, high power consumption, and low-frequency loss distortion in the prior art, so that the level shifting speed can be improved while reducing Loss of low frequency during level translation and reduces power consumption

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