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

A Wide Voltage Transimpedance Amplifier

A transimpedance amplifier and wide voltage technology, applied in the field of analog circuits, can solve problems such as difficulty in adapting to low voltage conditions, and achieve the effects of wide power supply range, low input impedance, and high output impedance

Active Publication Date: 2020-11-27
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure has twice the gate-source voltage and double the drain-source voltage from the power supply to the ground stack, which is difficult to adapt to low voltage conditions

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 Wide Voltage Transimpedance Amplifier
  • A Wide Voltage Transimpedance Amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: as figure 1 As shown, the wide-voltage transimpedance amplifier of the present invention uses a common-gate amplifier to monitor the input voltage, uses a current mirror to enhance the transconductance of the input transistor, and simultaneously ensures a higher loop gain. The minimum power supply voltage of the transimpedance amplifier is lower than the traditional structure by a threshold voltage. The working principle of the circuit is analyzed as follows: the input current enters from the source of the common gate tube PM2, and is converted from the drain output to the load resistor R1 into an output voltage. Current source PM1 is responsible for solidifying the bias current of the gain boost amplifier. PM3 and NM1 form a common gate amplifier, which is used to detect the voltage fluctuation at the input terminal and amplify the error. The amplified voltage is converted into current through the NM2 tube, and mirrored to PM2 through PM5 to form a trans...

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 wide-voltage transimpedance amplifier. The scheme is suitable for low-voltage radio frequency receivers and other low-voltage and wide-voltage analog circuit fields, and realizes the conversion from current to voltage. The transimpedance amplifier uses a common-gate amplifier to monitor the input voltage , using the current mirror to enhance the transconductance of the input tube, and at the same time ensure a high loop gain. Compared with the transimpedance amplifier of the traditional structure, the power supply voltage of the structure is lowered by an order of threshold voltage, and can work at a lower power supply voltage. The circuit has the characteristics of wide power supply range, low minimum operating voltage, low input impedance and high output impedance.

Description

technical field [0001] The invention relates to an amplifier, in particular to a wide-voltage transimpedance amplifier, which belongs to the technical field of analog circuits. Background technique [0002] With the continuous reduction of the size of the integrated circuit process, the power supply voltage of the chip is constantly evolving towards a lower direction. However, due to the constraints of the leakage current of transistors, the threshold voltage of transistors does not continue to decrease with the feature size, but maintains at the level of 350mV to 450mV, which brings challenges to traditional analog circuit design. As an important basic module for current-voltage conversion, transimpedance amplifiers are widely used in radio frequency communication circuits, sensor circuits and other common analog circuits. Transimpedance amplifiers based on transconductance enhancement technology and common-gate input have the characteristics of low input impedance and hig...

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): H03F1/02H03F1/56H03F3/45H03G3/30
CPCH03F1/0211H03F1/56H03F3/45179H03G3/30H03F1/0222H03F1/086H03F1/301H03F3/345H03F2200/513H03F2200/72
Inventor 陈超杨军刘新宁
Owner SOUTHEAST 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