A delay circuit and electronic system including same

Abstract

The invention discloses a delay circuit and an electronic system having the same. The delay circuit may include an input terminal, an output terminal, a bias current generator, and a delay generator.The bias current generator is coupled between the first reference voltage and the second reference voltage and is used for generating a bias current. The delay generator is coupled between the first reference voltage and the second reference voltage and is used for generating delay of the delay signal relative to the input signal according to the bias current. The bias current generator comprisesa current mirror, a current module and a transistor. The delay generator includes a first current mirror circuit, a second current mirror circuit, a transistor, a capacitor, a switching circuit, and aSchmidt inverter, wherein an output terminal is coupled to the Schmidt inverter to output a delay signal. Compared with a traditional delay circuit, the delay circuit provided by the invention has lower power consumption and higher precision in process, voltage and temperature.

Description

technical field [0001] The present invention relates to electronic circuits, in particular to a delay circuit and an electronic system equipped with the delay circuit. Background technique [0002] Delay circuits are important basic circuits in electronic devices. Traditional delay circuits have many disadvantages. For example, a slow input slew at an output stage in a conventional delay circuit can result in significant power dissipation in that output stage. As another example, the circuit characteristics of traditional delay circuits are quite sensitive to process, voltage and temperature (which may be referred to as PVT for short), especially, there is a large delay variation (delay variation) on PVT, which may cause electronic devices inaccurate operation. Therefore, a novel architecture is needed to improve the overall performance of the electronic system. Contents of the invention [0003] An object of the present invention is to disclose a delay circuit and an ...

AI Technical Summary

Problems solved by technology

Traditional delay circuits have many disadvantages

For example, a slow input slew of an output stage in a conventional delay circuit can result in a large power dissipation of this output stage

As another example, the circuit characteristics of traditional delay circuits are quite sensitive to process, voltage and temperature (which may be referred to as PVT for short), especially, there is a large delay variation (delay variation) on PVT, which may cause electronic devices inaccurate operation

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