Zero-temperature coefficient reference voltage generating circuit for three-dimensional storage

Abstract

The invention discloses a zero-temperature coefficient reference voltage generation circuit for a three-dimensional storage. The zero-temperature coefficient reference voltage generation circuit comprises a starting circuit, a current generating circuit and a voltage generating circuit, wherein the starting circuit, the current generating circuit and the voltage generating circuit are connected in sequence, the starting circuit is used for guaranteeing that the zero-temperature coefficient reference voltage generation circuit can work normally after being powered on, the current generating circuit is used for generating a current of negative temperature coefficients, the current with the negative temperature coefficient is unrelated to a supply voltage, and the voltage generating circuit is used for generating a reference voltage of zero temperature coefficients according to the current of the negative temperature coefficients. The zero-temperature coefficient reference voltage generation circuit for the three-dimensional storage has the advantages of being simple in structure, easy in achievement mode, low in power consumption and free of influence by the supply voltage and having the zero temperature coefficients.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional memory, in particular to a three-dimensional memory-oriented zero temperature coefficient reference voltage generating circuit with simple structure, simple implementation, low power consumption and no influence of power supply voltage. Background technique [0002] In memory circuits, especially in the application of three-dimensional memory, in order to improve the consistency, reliability and accuracy of the read operation of the memory circuit, a stable reference voltage that is not affected by power supply voltage and temperature changes is required for the read operation the reference voltage. [0003] In order to reduce the influence of temperature, the prior art provides a stable reference circuit that is not affected by temperature changes, such as a bandgap reference circuit (Bandgap Reference Circuit), to generate the above reference voltage. In simple terms, the bandgap refe...

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Problems solved by technology

Traditional bandgap reference circuits such as figure 1 As shown, it includes two triodes and an operat

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