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

High performance operational amplifier with jfet input

A high-performance operation and amplifier technology, applied in the direction of amplifiers, DC-coupled DC amplifiers, differential amplifiers, etc., can solve the problems of high offset voltage of JFET tubes, increase gain, increase input resistance, and reduce input bias current Effect

Active Publication Date: 2020-01-31
NO 24 RES INST OF CETC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a high-performance operational amplifier with JFET input to solve the problem of large offset voltage when the current operational amplifier uses a JFET tube

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
  • High performance operational amplifier with jfet input
  • High performance operational amplifier with jfet input

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0026] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms according to specific situations.

[0027] see figure 1 , is a ...

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 JFET (Junction Field-Effect Transistor) input high-performance operational amplifier, comprising an input level circuit, a gain circuit, an output level circuit and a bias circuit. The bias circuit is used for supplying a corresponding bias voltage and bias current to the input level circuit and the output level circuit. The input level circuit is used for inputting a signal and outputting the signal to the gain circuit. The gain circuit is used for amplifying the signal and outputting the amplified signal to the output level circuit. The output level circuit is used for stably outputting the amplified signal. The input level circuit is used for receiving an offset control signal generated according to an offset voltage of the amplified signal, thereby carrying out real-time adjustment on the offset voltage resulting from a JFET of the input level circuit in an operational amplification process. The offset voltage is reduced by carrying out matching design on the input level circuit and the gain circuit.

Description

technical field [0001] The invention belongs to the field of integrated circuits, in particular to a high-performance operational amplifier with a JFET (Junction Field-Effect Transistor) input. Background technique [0002] With the continuous development of microelectronics technology, integrated operational amplifiers have developed very rapidly. General-purpose integrated operational amplifiers have undergone several generations of replacement, and various technical indicators have been continuously improved. At the same time, a variety of special-purpose integrated operational amplifiers have been developed to meet special needs, such as high-impedance, low-power, high-speed, broadband and other high-performance operational amplifiers. [0003] High input impedance precision operational amplifiers are widely used in satellite communications, medical equipment, automatic control systems, smart sensors and other fields. According to circuit theory, the input impedance of ...

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 Patents(China)
IPC IPC(8): H03F1/30H03F1/56H03F3/45
CPCH03F1/306H03F1/56H03F3/45394
Inventor 张明敏杨阳王成鹤付晓君何峥嵘
Owner NO 24 RES INST OF CETC
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