Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption

A MOS transistor and cascode technology, which is applied in the field of broadband low-power symmetrical folded MOS transistor cascode amplifiers, can solve the problems of unused transmission of small signal current, difficulty in achieving high bandwidth performance, and high static power consumption. , to achieve the effect of symmetrical positive and negative conversion rates, increased bandwidth, and high CMRR

Active Publication Date: 2013-02-27
TSINGHUA UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Compared with other types of amplifiers, its static power consumption is high
[0007] 2. The current sources MN6 and MN8 are only used as current sources and are not used to transmit small signal currents, which is a kind of "waste".
[0008] 3. In the case of strict power consumption requirements, it is difficult to achieve high bandwidth performance

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
  • Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption
  • Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption
  • Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention provides a broadband low-power symmetrical folded MOS tube cascode amplifier. in figure 2 Wherein, the broadband low power consumption symmetrical folded MOS tube cascode amplifier includes:

[0021] The shunt input stage is composed of PMOS tubes MP1a, MP1b, MP2a, and MP2b. The sizes of MP1a, MP1b, MP2a, and MP2b are the same;

[0022] The intermediate stage for amplifying and recovering current includes a first current mirror composed of NMOS tubes MN6, MN5, and MN3, and is connected to the MP2b tube of the input stage, where MN6 is connected to MN12 and MN9 at the same time, and MN12 and MN9 are connected to MP1a at the same time. And a second current mirror composed of NMOS transistors MN4, MN7, MN8, and connected to the MP1b tube of the input stage, where MN8 is connected to MN10 and MN11 at the same time, and MN11 and MN10 are connected to MP2a at the same time;

[0023] Rail-to-rail output stage, composed of NMOS tubes MN10, MN12 and PMOS tubes M...

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 symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption, belonging to the design field of analogue integrated circuits. The amplifier comprises a shunt input stage, a recovery-current amplifying intermediate stage and a rail-to-rail output stage, wherein the shunt input stage is formed by four PMOS (P-channel metal oxide semiconductor) transistors; the recovery-current amplifying intermediate stage is used for converting input voltage signals into four paths of small signal currents and formed by two low-voltage current mirrors as well as is used for amplifying recovery currents; and the rail-to-rail output stage is formed by four PMOS transistors and two NMOS (N-channel metal oxide semiconductor) transistors and used for realizing rail-to-rail output of signals. The amplifier is capable of improving the bandwidth capability by over two times under the condition of not adding power consumption, has the advantages of higher common-mode rejection ratio, symmetrical positive-negative conversion rate, higher low-frequency gain and the like, and can improve performances of a circuit.

Description

Technical field [0001] The invention belongs to the field of analog integrated circuit design, and particularly relates to a broadband low-power symmetrical folded MOS tube cascode amplifier. Background technique [0002] Since the 20th century, with the development of sub-micron and ultra-deep sub-micron technologies and the increasing maturity of system chip technology, battery-powered portable electronic products have achieved rapid development and rapid popularity. As the development of battery technology is far behind the development of electronic systems, from cardiac pacemakers to hearing aids, mobile phones and various products, strict restrictions are placed on the supply voltage of electronic products. On the other hand, as device sizes continue to shrink, the breakdown voltage of the process is also decreasing, which also places strict limits on the power supply voltage. The performance requirements of electronic devices are getting higher and higher, the development ...

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): H03F1/42
Inventor 方华军赵晓王敬梁仁荣许军
Owner TSINGHUA UNIV
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
Eureka Blog
Learn More
PatSnap group products