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Reference Voltage Circuit And Electronic Device

一种基准电压、电路的技术，应用在半导体装置领域，能够解决无法降低基准电压电路消耗电流等问题

Active Publication Date: 2016-09-07
SII SEMICONDUCTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, there is a problem that the current consumption of the reference voltage circuit cannot be reduced in an electronic device in which an operation mode in which the current consumption of the reference voltage circuit is intended to be suppressed and an operation mode in which accuracy and stability of the reference voltage are required coexist.

Method used

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  • Reference Voltage Circuit And Electronic Device
  • Reference Voltage Circuit And Electronic Device
  • Reference Voltage Circuit And Electronic Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] figure 1 It is a circuit diagram showing the reference voltage circuit of this embodiment.

[0016] The reference voltage circuit of this embodiment has a first power supply line 101, a second power supply line 100, a reference voltage output terminal 10, a reference voltage output terminal 11, an N-type depletion MOS transistor 1, an N-type depletion MOS transistor 3, N-type enhancement MOS transistor 2 , resistor 4 , resistor 5 , switching element 6 , switching element 7 , switching element 8 and switching element 9 .

[0017] The first power supply line 101 is connected to the first terminal of the switching element 6 and the first terminal of the switching element 7 . The drain of the N-type depletion MOS transistor 1 is connected to the second terminal of the switching element 6 , and the gate, source and backgate are connected to the first terminal of the switching element 8 . The drain of the N-type enhancement MOS transistor 2 is connected to the first termin...

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PUM

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Abstract

Provided are a reference voltage circuit and an electronic device. The subject of the present invention aims to provide the reference voltage circuit capable of forming optimal circuits for various modes of the electronic device. The reference voltage circuit includes, between respective transistors forming the reference voltage circuit and between the transistors and a power supply terminal, switching elements configured to switch a circuit configuration of the reference voltage circuit.

Description

technical field [0001] The present invention relates to a semiconductor device that outputs a constant reference voltage. Background technique [0002] As a reference voltage circuit capable of obtaining a stable output voltage against fluctuations in power supply voltage and temperature, conventional image 3 The circuit shown (refer to Patent Document 1). [0003] The conventional reference voltage circuit 503 has an N-type depletion MOS transistor 51 , an N-type depletion MOS transistor 56 , an N-type enhancement MOS transistor 52 and a resistor group 58 . [0004] Patent Document 1: Japanese Patent Laid-Open No. 2007-266715 [0005] However, in the prior art, there is a problem that the current consumption of the reference voltage circuit cannot be reduced in an electronic device in which an operation mode in which the current consumption of the reference voltage circuit is intended to be suppressed and an operation mode in which accuracy and stability of the reference ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/563
CPCG05F1/563G05F3/00G05F3/02G11C5/143G11C5/147
Inventor 前谷文彦小池智幸
Owner SII SEMICONDUCTOR CORP