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

A Reconfigurable Operational Transconductance Amplifier

A technology of transconductance amplifier and auxiliary amplifier, which is applied to differential amplifiers, DC-coupled DC amplifiers, etc., can solve the problems of nonlinear distortion, increased distortion, and low transconductance efficiency of circuits, and can reduce current and power. The effect of consumption and good application prospect

Active Publication Date: 2022-07-01
TIANJIN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional structure, the input differential pair tube is in the saturation region, and its transconductance efficiency (g m / I D ) is lower, requiring more power dissipation to achieve the same specifications, such as gain (g m *R OUT ) and bandwidth (g m / C L )Wait
At the same time, the active devices used in the design of the operational transconductance amplifier are all nonlinear responses, so it will cause nonlinear distortion of the circuit, and the degree of distortion increases with the increase of the input signal swing

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
  • A Reconfigurable Operational Transconductance Amplifier
  • A Reconfigurable Operational Transconductance Amplifier
  • A Reconfigurable Operational Transconductance Amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0017] figure 1 It is the overall principle block diagram of the present invention, including a proportional to absolute temperature (PTAT) current source bias circuit, a common mode feedback (CMFB) circuit and a main circuit of a configurable operational transconductance amplifier. The output end is connected to the input end of the common mode feedback circuit, and the output end of the common mode feedback circuit is connected to a configurable operational transconductance amplifier, and the configurable operational transconductance amplifier receives the input voltage signal and the output of the common mode feedback circuit signal, and output the current signal according 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 reconfigurable operational transconductance amplifier, comprising an NMOS transistor M 17 , NMOS tube M 18 , PMOS tube M 19 , PMOS tube M 20 ;NMOS tube M 17 , NMOS tube M 18 The source of the switch S 2 connected, and are separated by resistors R N1 and resistor R N2 Connected to GNDA, PMOS tube M 19 , PMOS tube M 20 The source of the switch S 1 connected, and are separated by resistors R P1 and resistor R P2 Connected to VDDA; NMOS transistor M 17 , PMOS tube M 19 The gate is connected to the positive input V INP , the drain is connected to the common mode feedback circuit, the NMOS tube M 18 , PMOS tube M 20 The gate is connected to the negative input V INN , the drain is connected to the common mode feedback circuit. The reconfigurable open-loop operational transconductance amplifier provided by the present invention uses an analog switch to configure a high linearity and low power consumption mode of the operational transconductance amplifier.

Description

technical field [0001] The invention relates to the technical field of analog CMOS integrated circuits, in particular to a reconfigurable operational transconductance amplifier. Background technique [0002] An operational transconductance amplifier is a circuit structure that converts an input voltage signal into an output current signal, and is widely used in modern electronic systems. Operational transconductance amplifier circuits often use a common source structure, which has the advantages of large input impedance, small output impedance, large transconductance value, and good compatibility, so it is widely used. In the traditional structure, the input differential pair tube is in the saturation region, and its transconductance efficiency (g m / I D ) is lower, requiring more power dissipation to achieve the same specifications, such as gain (g m *R OUT ) and bandwidth (g m / C L )Wait. At the same time, the active devices used in the design of the operational tra...

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): H03F3/45
CPCH03F3/45
Inventor 廖轰王科平
Owner TIANJIN UNIV
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