Ultra-Low-Power Low-Voltage Bandgap Reference

Abstract

The invention relates to the field of integrated circuits and aims at providing an ultra-low power consumption voltage source which can work under the low supply voltage and is not sensitive to the change of supply voltage. According to the ultra-low power consumption low-voltage band gap reference voltage source, an M3 grid electrode, an M4 grid electrode, an M5 grid electrode of a PMOS tube are connected, and a source electrode is connected with a power supply VDD and is connected with an M3 grid drain electrode; an M1 drain electrode of an NMOS tube is connected with an M3 drain electrode, a source electrode is connected to the ground, an M2 drain electrode of the NMOS tube is connected with an M4 drain electrode, the source electrode is connected to the ground through a resistor RPTAT, an M1 grid electrode is connected with an M2 grid electrode, and a resistor RCTAT is connected between the M1 grid electrode and the ground and between the M2 grid electrode and the ground respectively; an M6 source electrode of the PMSO tube is connected with the power supply VDD, the drain electrode is connected with the M1 grid electrode and the M2 grid electrode, and a grid electrode is connected with an M7 grid electrode; an M7 source electrode of the PMOS tube is connected with the power supply VDD, the drain electrode is connected to the ground through a resistor ROUT, and meanwhile the drain electrode is connected with an M5 drain electrode; the M3 drain electrode and the M4 drain electrode are connected to the negative input end and the positive input end of an operational transconductance amplifier respectively. The ultra-low power consumption low-voltage band gap reference voltage source is mainly applied to design and production of the voltage source.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to the application in radio frequency circuits or ultra-low power consumption sensors, which can provide low-voltage reference voltage sources with ultra-low power consumption. Specifically, it relates to an ultra-low-power low-voltage bandgap reference voltage source. Background technique [0002] In recent years, in order to detect physical and environmental information in different locations, the coverage of sensor networks has become more and more extensive. Generally speaking, the sensors at each node are powered by batteries, which imposes strict requirements on the power consumption of the sensors. For this reason, low power consumption and low voltage have become the inevitable requirements of the reference voltage source it adopts. In addition, in the radio frequency circuit, low voltage and low power consumption can ensure faster start-up and higher receiving sensitivi...

AI Technical Summary

Problems solved by technology

This structure is affected by the offset voltage and the base current of the triode, and the performance is poor

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