Check patentability & draft patents in minutes with Patsnap Eureka AI!

Programmable amplifier applied to sensor

A technology of amplifiers and sensors, applied in the field of programmable amplifiers, can solve problems such as reducing system performance, and achieve the effects of low noise, weakening flicker noise, and weakening offset voltage

Pending Publication Date: 2022-01-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because the signal itself is weak, it also needs to have the characteristics of low noise, so as to prevent the signal from being submerged in the noise and reducing the performance of the system.

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
  • Programmable amplifier applied to sensor
  • Programmable amplifier applied to sensor
  • Programmable amplifier applied to sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0029] Such as figure 1 As shown, the present invention mainly includes two amplifiers, a controllable resistance feedback network and an RC filter. Wherein the input port VIP is connected to the positive port of the first amplifier A1, the input port VIN is connected to the positive port of the second amplifier A2, the output port of the first amplifier A1 is connected to one end of the second resistor R2 and the fourth resistor R4, and the terminal of the second amplifier A2 The output port is connected to one end of the third resistor R3 and the fifth resistor R5, and the other ports of the second resistor R2 and the third resistor R3 are respectively connected to the negative port of the first amplifier A1 and the negative port of the second amplifier A2. The output port VOUTP is connected to one end of the fourth resistor R4 and a port of the seco...

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 belongs to the technical field of amplifiers, and particularly relates to a programmable amplifier applied to a sensor. The programmable amplifier comprises two low-noise amplifiers, a low-pass filter and a resistance feedback network. The core of the programmable amplifier is as follows: based on a negative feedback theory, the resistance value in a feedback network is controlled through a switch to control a feedback coefficient so that the gain is changed; meanwhile, low-frequency noise and offset voltage are suppressed by adopting a chopping modulation technology; and finally, the low-frequency noise and the offset voltage are filtered by utilizing an RC filter.

Description

technical field [0001] The invention belongs to the technical field of amplifiers, in particular to a programmable amplifier applied to sensors. Background technique [0002] With the development of microelectronics technology, the functions of various sensors have been expanded, and the ability to accurately collect effective sensor signals is crucial to the entire system. Therefore, the system has extremely high index requirements for the performance of the analog front-end processing circuit, and a low-noise operational amplifier with adjustable gain is essential in the entire circuit. The adjustable function is convenient for amplifying the weak signal of the sensor to a suitable Within the voltage, it is convenient for the post-stage analog-to-digital converter (ADC) to collect. At the same time, because the signal itself is weak, it also needs to have the characteristics of low noise, so as to prevent the signal from being submerged in the noise and reducing the perfo...

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): H03F1/30H03F1/34H03F3/45
CPCH03F1/301H03F1/342H03F3/45192H03F2200/372
Inventor 李兆江唐鹤
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