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High-performance Schmitt trigger capable of switching working points and working point switching method

A Schmitt trigger, operating point technology, applied in the direction of pulse generation, electrical components, generating electrical pulses, etc., can solve the problem that the Schmitt circuit cannot be perfectly compatible with two operating points.

Pending Publication Date: 2021-05-18
NAT SUPERCOMPUTING WUXI CENT
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The high-performance Schmitt trigger with switchable operating point provided by the present invention solves the problem that the Schmidt circuit in the prior art is difficult to be perfectly compatible with two operating points, so that the circuit can be compatible with two operating points. Points can obtain excellent anti-noise interference ability

Method used

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  • High-performance Schmitt trigger capable of switching working points and working point switching method
  • High-performance Schmitt trigger capable of switching working points and working point switching method
  • High-performance Schmitt trigger capable of switching working points and working point switching method

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. It should be noted that the terminology used in the present invention is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present application.

[0024] Such as figure 2As shown, a high-performance Schmitt trigger with a switchable operating point provided by Embodiment 1 of the present invention includes a first PMOS, a second PMOS, a third PMOS, a first NMOS, a second NMOS, a third NMOS, Input terminal, output terminal, power supply; the source of the first PMOS is connected to the power supply; the source of the second PMOS is respectively connected to the drain of the first PMOS and the source of the third PMOS; the drain of the second PMOS is connected to the first NMOS The drain of the first NMOS is connected to the drain of the second N...

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Abstract

The invention provides a high-performance Schmitt trigger capable of switching working points, belonging to the field of semiconductor integrated circuit design. The high-performance Schmitt trigger comprises a positive threshold adjusting module, a negative threshold adjusting module and a gating signal module. According to the invention, switching between two working points can be achieved through the gating signal module, so the multi-signal compatibility of a circuit can be guaranteed, and good anti-dry noise interference capability can be ensured to be kept at each working point.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuit design, in particular to a high-performance Schmitt trigger with switchable operating point. Background technique [0002] The Schmitt trigger has bidirectional hysteresis characteristics for the input signal, corresponding to the positive threshold voltage and the negative threshold voltage respectively, and its output result is the inversion of the input signal. When the input signal rises from low level to high level, the output will invert from high level to low level only when the voltage value is greater than the positive threshold voltage; when the input signal falls from high level to low level, Only when the voltage value is less than the negative threshold voltage, the output will invert from low level to high level. Due to the existence of positive and negative threshold voltages, the Schmitt trigger has excellent anti-noise ability, so it is widely used in various inter...

Claims

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Application Information

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IPC IPC(8): H03K3/3565
CPCH03K3/3565
Inventor 刘天奇蔡小五杨广文甘霖李博
Owner NAT SUPERCOMPUTING WUXI CENT
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