Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bias current generating circuit

A technology for generating circuits and bias currents, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., it can solve the problem of irrelevance between bias current output and control current, and achieve simple structure, reduced number, and circuit boards. Small size effect

Active Publication Date: 2018-10-16
SEMICON MFG INT (SHANGHAI) CORP +1
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bias current generating circuit to solve the problem that the output of the additional bias current and the control current of the existing bias current generating circuit are not related

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
  • Bias current generating circuit
  • Bias current generating circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The bias current generation circuit proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0042] The core idea of ​​the present invention is to provide a bias current generating circuit to solve the problem that the output of the extra bias current required by the existing bias current generating circuit is not related to the control current.

[0043] In order to realize the above ideas, the present invention provides a bias current generating circuit, the bias current generating circuit includes a reference voltage terminal, a conversion circuit, a self-...

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 provides a bias current generating circuit which comprises a reference voltage end, a switching circuit, a self-bias current circuit and a current output circuit, wherein the reference voltage end supplies reference voltage to the switching circuit and the self-bias current circuit; the self-bias current circuit forms first association current according to the reference voltage, andthe first association current is supplied to the switching circuit; the switching circuit comprises an amplifier component, starting of the amplifier component is controlled by the first association current, and the amplifier component generates control current according to the reference voltage, and the control current is supplied to the self-bias current circuit and the current output circuit; the self-bias current circuit generates second association current according to the control current, and operation of the amplifier component is controlled by the second association current after beingstarted; the current output circuit outputs bias current according to the control current.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a bias current generation circuit. Background technique [0002] The traditional bias current generating circuit provides bias current for the amplifier circuit, but because its internal structure also has amplifier components, and the traditional bias current generating circuit cannot provide bias current by itself, so an additional circuit structure is required, and the additional The circuit structure needs to increase the circuit board area and power consumption, and because the output of the extra current generated is not related to the bias current of the final output, if the extra current generated is too large, it will affect the stability of the circuit and make the amplifier components offset voltage Increase, affect the accuracy of the amplifier components, if the additional current is too small, the bias current generation circuit will not work properly. [00...

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
CPCG05F1/561
Inventor 陈廷乾
Owner SEMICON MFG INT (SHANGHAI) CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com