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Operational amplifier circuit and design method thereof

An operational amplifier and circuit technology, applied in differential amplifiers, improved amplifiers to expand bandwidth, DC-coupled DC amplifiers, etc., can solve problems such as high power consumption and poor performance, and achieve high DC gain, low recovery time and power consumption. , the effect of high joint gain bandwidth

Pending Publication Date: 2018-01-16
刘欣亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an operational amplifier circuit and design method to improve the problems of large power consumption and poor performance of the two-stage operational amplifier in the prior art

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  • Operational amplifier circuit and design method thereof
  • Operational amplifier circuit and design method thereof
  • Operational amplifier circuit and design method thereof

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Embodiment Construction

[0016] 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. The following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0017] figure 1 is a schematic block diagram of an operational amplifier circuit 100 provided by an embodiment of the present invention, figure 2 It is a circuit diagram of the operational amplifier circuit 100 provided by the embodiment of th...

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Abstract

The embodiment of the invention provides an operational amplifier circuit. The operational amplifier circuit comprises a first stage operational amplifier module and a second stage operational amplifier module; wherein the first stage operational amplifier module comprises four carbon nanotubes, and the second stage operational amplifier module comprises two carbon nanotubes; the first signal input port of the first stage operational amplifier module is coupled with an external signal source, and the first signal output port is coupled with the second signal input port of the second stage operational amplifier module; and the second signal output port of the second stage operational amplifier module is coupled with the load. Compared with the CMOS tubes in the prior art, the high DC gain,high joint gain bandwidth, lower recovery time and power consumption can be obtained by means of the carbon nanotubes.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to an operational amplifier circuit and a design method. Background technique [0002] Due to many challenges such as extremely short channel effect, photolithography technology constraints, process differences, leakage current and source-drain tunneling, the CMOS process has gradually reached its limit. [0003] Operational amplifiers (commonly called op amps) are key elements of analog and mixed-signal circuits. Due to the trend of decreasing power supply voltage, the design of high-performance analog integrated circuits has become an increasingly urgent demand in this field. Contents of the invention [0004] In view of this, an embodiment of the present invention provides an operational amplifier circuit and a design method to improve the problems of large power consumption and poor performance of the two-stage operational amplifier in the prior art. [0005] In order to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F1/48H03F3/45
Inventor 刘欣亮
Owner 刘欣亮