Ultra-low power consumption voltage detection circuit

Abstract

The invention discloses a ultra-low power consumption voltage detection circuit, which comprises an MOS diode voltage-dividing network, a level detection circuit and an output logic circuit. The main function of the MOS diode voltage-dividing network is to perform continuous sampling on a voltage to be detected, and provide a base input voltage and a base input current for an NPN triode in the level detection circuit; the level detection circuit is the core part of the ultra-low power consumption voltage detection circuit and utilizes the basic idea of band-gap reference, can realize accurate detection on the voltage to be detected under the condition that a reference voltage is not needed, and a voltage detection point has good temperature characteristics; and the output logic circuit is used for shaping a detection output signal at last. Compared with the traditional voltage detection technology, the ultra-low power consumption voltage detection circuit can operate at ultra-low power consumption (tens of nW) without an extra datum reference voltage, is low in area cost, and is very suitable for chip fields of radio frequency identification electronic tags, dual-interface intelligent cards and the like.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and relates to a voltage detection circuit with ultra-low power consumption, in particular to an application field that requires extremely low power consumption, such as radio frequency identification electronic tags and dual-interface smart cards. Background technique [0002] With the rapid development of semiconductor technology and the continuous improvement of chip integration, low power consumption technology has become a hot spot in current IC design research. The more functional modules integrated on a single chip, the higher the power consumption requirement of the chip. On the contrary, reducing power consumption has great commercial prospects in terms of energy saving and equipment cost reduction. Taking the familiar wireless communication system (such as radio frequency identification system and contactless smart card system) as an example, low power consumption has long ...

AI Technical Summary

Problems solved by technology

[0004] Comprehensive consideration, the traditional voltage detection circuit, no matter in terms of power consumption or area, is not suitable for the current ultra-low power consumption and high precision applications.

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