Instrument amplifier

A technology for instrumentation amplifiers and amplifiers, applied in the directions of amplifiers, amplifier types, differential amplifiers, etc., can solve the problems of high power consumption of instrumentation amplifiers, and achieve the effects of reducing power consumption, improving performance, and low-cost design

Active Publication Date: 2016-04-13
HANGZHOU VANGO TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the amplification gain of the instrumentation amplifier is determined by the three resistors R0~R2. The resistors themselves have thermal noise, and the larger the resistance value, the greater the thermal noise value; to achieve the low-noise design...

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
  • Instrument amplifier
  • Instrument amplifier
  • Instrument amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] see figure 2 , the embodiment of the present invention discloses an instrumentation amplifier to reduce the power consumption of the instrumentation amplifier while realizing low-noise and low-cost design of the instrumentation amplifier, including: a closed-loop amplifier 100 with a capacitance feedback structure, an input capacitance charging module 200, a feedback Capacitor discharge module 300, noise separation module 400 and logic controller. in:...

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 application discloses an instrument amplifier comprising a capacitance feedback structure closed loop amplifier, an input capacitor charging module, a feedback capacitor discharge module, a noise separating module and a logic controller; the capacitance feedback structure closed loop amplifier comprises a full differential operational amplifier, a first input capacitor, a second input capacitor, a first feedback capacitor and a second feedback capacitor; the input capacitor charging module is used for periodically charging the first and second input capacitors; the feedback capacitor discharge module is used for periodically discharging the first and second feedback capacitors; the noise separating module is used for separating signals from noises through the chopper modulation technology; the logic controller is respectively connected with the input capacitor charging module, the feedback capacitor discharging module and the noise separating module so as to control each module to work, thus reducing instrument amplifier power consumption, and reducing instrument amplifier noises and cost.

Description

technical field [0001] The invention relates to the technical field of high-precision measurement, and more specifically, relates to an instrument amplifier. Background technique [0002] As a high-precision amplifier used to amplify weak difference signals, instrumentation amplifiers are widely used in high-precision measurement fields such as electronic scales, pressure measurement, blood analysis, blood pressure monitors, gas analysis and measurement, power analysis and metering. [0003] figure 1 It shows an existing instrument amplifier, which realizes the set closed-loop gain amplification function by means of two single-ended output operational amplifiers Av1~Av2 and three resistors R0~R2, and has programmable amplification gain, low temperature drift, high Input impedance, high common mode rejection and other characteristics, but there are the following deficiencies: [0004] First, the circuit design of two operational amplifiers makes the instrumentation amplifie...

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
IPC IPC(8): H03F3/45H03F1/26
CPCH03F3/387H03F3/45071H03F3/45475H03F2200/156H03F2200/252H03F2200/261H03F2200/271H03F2203/45514H03F2203/45551
Inventor 钟书鹏
Owner HANGZHOU VANGO TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap