Supercharge Your Innovation With Domain-Expert AI Agents!

Voltage reference source capable of compensation in full temperature range

A technology of voltage reference source and temperature compensation circuit, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., to achieve the effect of low temperature coefficient and good temperature stability

Inactive Publication Date: 2012-07-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing voltage reference source for high-order compensation, and propose a voltage reference source for full temperature range compensation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Voltage reference source capable of compensation in full temperature range
  • Voltage reference source capable of compensation in full temperature range
  • Voltage reference source capable of compensation in full temperature range

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] The full temperature range compensation voltage reference source circuit block diagram of the present invention is as follows figure 1 As shown, it includes a start-up circuit, a first-order temperature compensation circuit, a low-temperature high-order compensation circuit, a high-temperature high-order compensation circuit, a negative feedback loop, a proportional superposition output circuit and a current bias circuit. The start-up circuit provides start-up bias voltage for the full temperature range compensation core circuit. When the whole circuit works stably, the start-up circuit stops working and is isolated from the whole circuit. The current bias circuit is mainly for the first-order temperature compensation circuit and negative feedback loop. bias current for proper operation. The negative feedback loop is mainly to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a voltage reference source capable of compensating in a full-temperature range, which particularly comprises a start-up circuit, a first-order temperature-compensation circuit, a proportional superposition output circuit and a current bias circuit, and is characterized by further comprising a low-temperature high-order compensation circuit, a high-temperature high-order compensation circuit and a negative feedback circuit. The voltage reference source adopts index curvature compensation at the low temperature, adopts piecewise linear curvature compensation at the high temperature, has extremely good temperature stability and extremely low temperature coefficient and can be applied to an analogue integrated circuit, a high-precision digital-to-analogue conversion circuit and a pure digital integrated circuit.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to the design of a voltage reference source. Background technique [0002] In analog, digital-analog hybrid, and even pure digital circuits, high-precision voltage reference sources are required, such as A / D converters, DRAMS, power converters, flash memory control circuits, etc. The stability of the voltage reference directly determines the quality of the circuit performance. The indicators describing the stability of the voltage reference source mainly include: power supply rejection ratio, temperature coefficient, etc. In order to meet the requirements of the circuit to work normally under harsh external temperature environment, the voltage reference must have a very small temperature coefficient, that is, very high temperature stability. [0003] The function of the voltage reference source is to provide reference voltages to other functional modules in the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 周泽坤王慧芳傅金马颖乾明鑫张波李肇基
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com